Darwin Core Data Package - Quick Reference Guide

Introduction

This guide is provided to assist users to understand the structure and content of Darwin Core Data Packages. The Darwin Core Data Package (DwC-DP) is an implementation of the Darwin Core Conceptual Model following the specifications in the Darwin Core Data Package Guide.

This Quick Reference Guide is distinct from the classic Darwin Core Quick Reference Guide in that this guide contains information beyond the simple term definitions. It includes all the information about how to use Darwin Core in the context of a Darwin Core Data Package. That means it includes data types, value constraints, table relationship constraints and repeats these everywhere in the structure that a given term is found. This guide makes reference to numerous terms borrowed from standard vocabularies, both internal and external to TDWG, other than the Darwin Core. In general these terms are not in the classical Darwin Core reference guide nor in the Darwin Core list of terms as they are externally managed and reused in this context.

DwC-DP is implemented using tables, most of which correspond directly to classes in Darwin Core. The page table of contents provides quick access to table definitions, and the field index within each table section provides quick access to the definitions of available fields. For an overview of the tables and their relationships, see the Visual Summary. Supplementary to this document is the Darwin Core Data Package Designer, which provides an interactive tool for finding fields, visualizing table relationship, and building templates for Darwin Core Data Packages from selected tables and fields.

Agent

Identifier: http://rs.tdwg.org/dwc-dp/1.0/agent

Description: A resource that acts or has the power to act.

Notes: A person, group, organization, machine, software or other entity that can act. Membership in the dcterms:Agent class is determined by the capacity to act, even if not doing so in a specific context. To act: To participate in an event or process by contributing through behavior, operation, or an effect resulting from active participation — regardless of whether that contribution is intentional, volitional, or conscious.

Examples:

`Carl Linnaeus`

`The Terra Nova Expedition`

`The National Science Foundation`

`The El Yunque National Forest ARBIMON System`

`ChatGPT`

dcterms:isVersionOf: http://purl.org/dc/terms/Agent

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
agent_pk				primary key	Yes	Yes
agentID				weak primary key	No	No

agent_pk
Title (Label)	Agent (Primary Key)
Namespace	dwc
Table	Agent
Description	A unique identifier for a dcterms:Agent.
Notes	The value in this field MAY be changed in aggregation to guarantee uniqueness.
Type	string
Constraints	{"required": true, "unique": true}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

agentID
Title (Label)	Agent ID
Namespace	dwc
Table	Agent
Description	An identifier for a dcterms:Agent.
Notes	The value in this field MUST be preserved in aggregation. Recommended best practice is to use a globally unique identifier.
Examples	`https://orcid.org/0000-0002-1825-0097`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

agentType
Title (Label)	Agent Type
Namespace	dwc
Table	Agent
Description	A category that best matches the nature of a dcterms:Agent.
Notes	Recommended best practice is to use a controlled vocabulary.
Examples	`person` `group` `organization` `camera`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentType

preferredAgentName
Title (Label)	Preferred Agent Name
Namespace	dcterms
Table	Agent
Description	A name of a dcterms:Agent preferred in searches and results.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/title

agentRemarks
Title (Label)	Agent Remarks
Namespace	dwc
Table	Agent
Description	Comments or notes about a dcterms:Agent.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentRemarks

Agent Agent Role

Identifier: http://rs.tdwg.org/dwc-dp/1.0/agent-agent-role

Description: A role filled by a dcterms:Agent with respect to another dcterms:Agent.

Examples:

`an instance of a dcterms:Agent that is a person is the director of another instance of a dcterms:Agent that is an organization`

`an instance of a dcterms:Agent that is a person is a member of another instance of a dcterms:Agent that is a group`

`an instance of a dcterms:Agent that is a person is the author of another instance of a dcterms:Agent that is software`

dcterms:isVersionOf: http://example.com/term-pending//agent-agent-role

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
agent_fk	role holder	agent	agent_pk	foreign key	Yes	Yes
relatedAgent_fk	role for	agent	agent_pk	foreign key	Yes	Yes

agent_fk
Title (Label)	Agent (Foreign Key)
Namespace	dwc
Table	Agent Agent Role
Description	An identifier for a dcterms:Agent.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

relatedAgent_fk
Title (Label)	Related Agent (Foreign Key)
Namespace	dwc
Table	Agent Agent Role
Description	An identifier for a related dcterms:Agent.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

agentRole
Title (Label)	Agent Role
Namespace	dwc
Table	Agent Agent Role
Description	A category that best matches the nature of a role of a dcterms:Agent.
Notes	Recommended best practice is to use a controlled vocabulary for the roles appropriate to the class of resource a dcterms:AgentRole is related to.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResource

agentRoleIRI
Title (Label)	Agent Role IRI
Namespace	dwciri
Table	Agent Agent Role
Description	An IRI of the controlled vocabulary value for a role of a dcterms:Agent.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResourceID

agentRoleSource
Title (Label)	Agent Role Source
Namespace	dc
Table	Agent Agent Role
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:agentRole is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

agentRoleOrder
Title (Label)	Agent Role Order
Namespace	dwc
Table	Agent Agent Role
Description	A numerical position of an AgentRole in a set of AgentRoles that have the same combination of agentRole, agentRoleIRI, agentRoleSource and related target identifier.
Notes	One could use dwc:agentRoleOrder to create an ordered list of collectors (dwc:agentRole = 'collector') for a dwc:MaterialEntity, for example. The first would have agentRoleOrder=1, the second would have agentRoleOrder=2.
Type	integer
Constraints	{"required": true, "minimum": 1}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentRoleOrder

agentRoleDate
Title (Label)	Agent Role Date
Namespace	dwc
Table	Agent Agent Role
Description	An interval during which a dcterms:AgentRole was in effect.
Notes	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionEffectiveDate

Agent Identifier

Identifier: http://rs.tdwg.org/dwc-dp/1.0/agent-identifier

Description: An adms:Identifier for a dcterms:Agent.

Notes: An important point to note is that properties of the adms:Identifier class are properties of the Identifier, not the resource that it identifies or the agency that issued it.

Examples:

`an ORCID`

`a Wikidata Q-number`

`an Index Herbariorum Institution Code`

`an International Standard Name Identifier`

dcterms:isVersionOf: http://www.w3.org/ns/adms#Identifier

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
agent_fk	for	agent	agent_pk	foreign key	Yes	Yes

agent_fk
Title (Label)	Agent (Foreign Key)
Namespace	dwc
Table	Agent Identifier
Description	An identifier for a dcterms:Agent.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

identifier
Title (Label)	Identifier
Namespace	skos
Table	Agent Identifier
Description	An unambiguous reference to a resource within a given context.
Notes	Recommended best practice is to identify a resource by means of a string conforming to a formal identification system.
Examples	`https://orcid.org/0000-0002-1825-0097` `https://ror.org/00mh9zx15`
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://www.w3.org/2004/02/skos/core#notation

identifierType
Title (Label)	Identifier Type
Namespace	dc
Table	Agent Identifier
Description	A category or system that best matches the nature of an identifier (skos:notation).
Notes	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/type

identifierTypeIRI
Title (Label)	Identifier Type IRI
Namespace	dcterms
Table	Agent Identifier
Description	An IRI of a controlled vocabulary value for a type of identifier.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/type

identifierTypeSource
Title (Label)	Identifier Type Source
Namespace	dc
Table	Agent Identifier
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:identifierType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

identifierLanguage
Title (Label)	Identifier Language
Namespace	dc
Table	Agent Identifier
Description	A language in which an identifier is presented.
Notes	Recommended best practice is to use an ISO639-2 three-letter language code.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/language

Agent Media

Identifier: http://rs.tdwg.org/dwc-dp/1.0/agent-media

Description: A dcterms:Agent as content in an ac:Media entity.

Examples:

`a person shown in a photograph`

`a group of people in a video`

dcterms:isVersionOf: http://example.com/term-pending//agent-media

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
media_fk	this media instance	media	media_pk	foreign key	Yes	Yes
agent_fk	about	agent	agent_pk	foreign key	Yes	Yes

media_fk
Title (Label)	Media (Foreign Key)
Namespace	dcterms
Table	Agent Media
Description	An identifier for an ac:Media resource.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://purl.org/dc/terms/identifier

agent_fk
Title (Label)	Agent (Foreign Key)
Namespace	dwc
Table	Agent Media
Description	An identifier for a dcterms:Agent.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

subjectCategory
Title (Label)	Subject Category
Namespace	ac
Table	Agent Media
Description	A term to describe the content of a image or a region of interest within an image using a controlled value string.
Notes	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/CVtermLiteral

subjectCategoryIRI
Title (Label)	Subject Category IRI
Namespace	Iptc4xmpExt
Table	Agent Media
Description	An IRI of a controlled vocabulary value for the subject category of an ac:Media resource.
Notes	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://iptc.org/std/Iptc4xmpExt/2008-02-29/CVterm

subjectCategoryVocabulary
Title (Label)	Subject Category Source
Namespace	ac
Table	Agent Media
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:subjectCategory is given.
Notes	The Audiovisual Core recommended vocabularies do not need to be cited here. There is no required linkage between individual Subject Category terms and the vocabulary; the mechanism is intended to support discovery of the normative URI for a term, but not guarantee it.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectCategoryVocabulary

subjectPartLiteral
Title (Label)	Subject Part Literal
Namespace	ac
Table	Agent Media
Description	The portion or product of organism morphology, behaviour, environment, etc. that is either predominantly shown or particularly well exemplified by the ac:Media resource, denoted by a controlled value string.
Notes	Values SHOULD be selected from the Controlled Vocabulary for ac:subjectPart. It is best practice to use ac:subjectPart instead of ac:subjectPartLiteral whenever practical.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectPartLiteral

subjectPart
Title (Label)	Subject Part
Namespace	ac
Table	Agent Media
Description	The portion or product of organism morphology, behaviour, environment, etc. that is either predominantly shown or particularly well exemplified by the ac:Media resource, denoted by an IRI.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectPart

subjectOrientationLiteral
Title (Label)	Subject Orientation Literal
Namespace	ac
Table	Agent Media
Description	Specific orientation (= direction, view angle) of the subject represented in the ac:Media resource with respect to the acquisition device, denoted by a controlled value string.
Notes	Values SHOULD be selected from the Controlled Vocabulary for ac:subjectOrientation. It is best practice to use ac:subjectOrientation instead of ac:subjectOrientationLiteral whenever practical.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectOrientationLiteral

subjectOrientation
Title (Label)	Subject Orientation
Namespace	ac
Table	Agent Media
Description	Specific orientation (= direction, view angle) of the subject represented in the ac:Media resource with respect to the acquisition device.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectOrientation

physicalSetting
Title (Label)	Physical Setting
Namespace	ac
Table	Agent Media
Description	The setting of the content represented in an ac:Media resource, such as images, sounds, and movies if the provider deems them relevant.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/physicalSetting

Bibliographic Resource

Identifier: http://rs.tdwg.org/dwc-dp/1.0/bibliographic-resource

Description: A book, article, or other documentary resource.

dcterms:isVersionOf: http://purl.org/dc/terms/BibliographicResource

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
reference_pk				primary key	Yes	Yes
referenceID				weak primary key	No	No
isPartOfReference_fk	part of	bibliographic-resource	reference_pk	foreign key	Yes	No
isPartOfReferenceID	part of	bibliographic-resource	referenceID	weak foreign key	No	No
author_fk	authored by	agent	agent_pk	foreign key	Yes	No
authorID	authored by	agent	agentID	weak foreign key	No	No
editor_fk	edited by	agent	agent_pk	foreign key	Yes	No
editorID	edited by	agent	agentID	weak foreign key	No	No
publisher_fk	published by	agent	agent_pk	foreign key	Yes	No
publisherID	published by	agent	agentID	weak foreign key	No	No

reference_pk
Title (Label)	Reference (Primary Key)
Namespace	dwc
Table	Bibliographic Resource
Description	A unique identifier for a dcterms:BibliographicResource.
Notes	The value in this field MAY be changed in aggregation to guarantee uniqueness.
Type	string
Constraints	{"required": true, "unique": true}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/referenceID

referenceID
Title (Label)	Reference ID
Namespace	dwc
Table	Bibliographic Resource
Description	An identifier for a dcterms:BibliographicResource.
Notes	The value in this field MUST be preserved in aggregation. Recommended best practice is to use a globally unique identifier.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/referenceID

isPartOfReference_fk
Title (Label)	Is Part Of Reference (Foreign Key)
Namespace	dwc
Table	Bibliographic Resource
Description	An identifier for a dcterms:BibliographicResource that this dcterms:BibliographicResource is a part of.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/referenceID

isPartOfReferenceID
Title (Label)	Is Part Of Reference ID
Namespace	dwc
Table	Bibliographic Resource
Description	An identifier for a dcterms:BibliographicResource that this dcterms:BibliographicResource is a part of.
Notes	The value in this field MAY refer to a dcterms:BibliographicResource within or external to the dataset in which this record originated.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/referenceID

referenceType
Title (Label)	Reference Type
Namespace	dwc
Table	Bibliographic Resource
Description	A category that best matches the nature of a dcterms:BibliographicResource.
Notes	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/referenceType

bibliographicCitation
Title (Label)	Bibliographic Citation
Namespace	dcterms
Table	Bibliographic Resource
Description	A bibliographic reference for a dcterms:BibliographicResource.
Notes	Recommended practice is to include sufficient bibliographic detail to identify the resource as unambiguously as possible. The intended usage of this term in Darwin Core is to provide the preferred way to cite the resource itself. Note that the intended usage of dcterms:references in Darwin Core, by contrast, is to point to the definitive source representation of the resource, if one is available.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/bibliographicCitation

bibliographicIdentifier
Title (Label)	Bibliographic Identifier
Namespace	dwc
Table	Bibliographic Resource
Description	A number or symbol to uniquely identify a dcterms:BibliographicResource.
Notes	Recommended best practice is to use a globally unique identifier issued by recognizable authority (e.g., International ISBN Agency, International DOI Foundation).
Examples	`978-0565095024` `10998406` `10.1046/j.1420-9101.1997.10010039.x`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/bibliographicIdentifier

bibliographicIdentifierType
Title (Label)	Bibliographic Identifier Type
Namespace	dwc
Table	Bibliographic Resource
Description	A code that best matches the nature of an identifier for a dcterms:BibliographicResource.
Notes	Recommended best practice is to use a limited, tightly controlled vocabulary of identifier issuers. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`ISBN` `DOI` `ISSN` `OCN`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/bibliographicIdentifierType

title
Title (Label)	Title
Namespace	dcterms
Table	Bibliographic Resource
Description	A name given to a resource.
Notes	Typically, a dc:title will be a name by which the resource is formally known.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/title

author
Title (Label)	Author
Namespace	dc
Table	Bibliographic Resource
Description	A name of a dcterms:Agent primarily responsible for creating a dcterms:BibliographicResource.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/creator

author_fk
Title (Label)	Author (Foreign Key)
Namespace	dwc
Table	Bibliographic Resource
Description	An identifier for a dcterms:Agent primarily responsible for making a dcterms:BibliographicResource.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

authorID
Title (Label)	Author ID
Namespace	dwc
Table	Bibliographic Resource
Description	An identifier for a dcterms:Agent primarily responsible for making a dcterms:BibliographicResource.
Notes	The value in this field MAY refer to a dcterms:Agent within or external to the dataset in which this record originated.
Examples	`https://orcid.org/0000-0002-1825-0097`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

editor
Title (Label)	Editor
Namespace	bibo
Table	Bibliographic Resource
Description	A name of a dcterms:Agent having managerial and sometimes policy-making responsibility for the editorial part of a publishing firm or of a newspaper, magazine, or other publication.
Type	string
dcterms:isVersionOf	http://purl.org/ontology/bibo/editor

editor_fk
Title (Label)	Editor (Foreign Key)
Namespace	dwc
Table	Bibliographic Resource
Description	An identifier for a dcterms:Agent having managerial and sometimes policy-making responsibility for the editorial part of a publishing firm or of a newspaper, magazine, or other publication.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

editorID
Title (Label)	Editor ID
Namespace	dwc
Table	Bibliographic Resource
Description	An identifier for a dcterms:Agent having managerial and sometimes policy-making responsibility for the editorial part of a publishing firm or of a newspaper, magazine, or other publication.
Notes	The value in this field MAY refer to a dcterms:Agent within or external to the dataset in which this record originated.
Examples	`https://orcid.org/0000-0002-1825-0097`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

publisher
Title (Label)	Publisher
Namespace	dc
Table	Bibliographic Resource
Description	A name of a dcterms:Agent responsible for making a dcterms:BibliographicResource available.
Notes	Examples of a dcterms:publisher include a person, an organization, or a service. Typically, the name of a dcterms:publisher should be used to indicate the entity.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/publisher

publisher_fk
Title (Label)	Publisher (Foreign Key)
Namespace	dwc
Table	Bibliographic Resource
Description	An identifier for a dcterms:Agent responsible for making a Reference available.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

publisherID
Title (Label)	Publisher ID
Namespace	dwc
Table	Bibliographic Resource
Description	An identifier for a dcterms:Agent responsible for making a Reference available.
Notes	The value in this field MAY refer to a dcterms:Agent within or external to the dataset in which this record originated.
Examples	`https://orcid.org/0000-0002-1825-0097`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

volume
Title (Label)	Volume
Namespace	bibo
Table	Bibliographic Resource
Description	A volume number of a dcterms:BibliographicResource.
Type	string
dcterms:isVersionOf	http://purl.org/ontology/bibo/volume

issue
Title (Label)	Issue
Namespace	bibo
Table	Bibliographic Resource
Description	An issue number of a dcterms:BibliographicResource.
Type	string
dcterms:isVersionOf	http://purl.org/ontology/bibo/issue

edition
Title (Label)	Edition
Namespace	bibo
Table	Bibliographic Resource
Description	An edition of a dcterms:BibliographicResource.
Type	string
dcterms:isVersionOf	http://purl.org/ontology/bibo/edition

pages
Title (Label)	Pages
Namespace	bibo
Table	Bibliographic Resource
Description	A range of pages within a dcterms:BibliographicResource.
Type	string
dcterms:isVersionOf	http://purl.org/ontology/bibo/pages

version
Title (Label)	Version
Namespace	bibo
Table	Bibliographic Resource
Description	A version number of a dcterms:BibliographicResource.
Type	string
dcterms:isVersionOf	http://purl.org/pav/version

issued
Title (Label)	Issued
Namespace	dcterms
Table	Bibliographic Resource
Description	Date of formal issuance of a dcterms:BibliographicResource.
Notes	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/issued

accessed
Title (Label)	Accessed
Namespace	bibo
Table	Bibliographic Resource
Description	The resource is related to a source which was originally accessed or consulted on the given date as part of creating or authoring the resource. The source(s) should be specified using pav:sourceAccessedAt.
Type	string
dcterms:isVersionOf	http://purl.org/pav/sourceAccessedOn

peerReviewStatus
Title (Label)	Peer Review Status
Namespace	bibo
Table	Bibliographic Resource
Description	An indication of whether a dcterms:BibliographicResource was peer reviewed.
Type	boolean
dcterms:isVersionOf	http://purl.org/ontology/bibo/status

referenceRemarks
Title (Label)	Reference Remarks
Namespace	dwc
Table	Bibliographic Resource
Description	Comments or notes about a dcterms:BibliographicResource.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/referenceRemarks

Chronometric Age

Identifier: http://rs.tdwg.org/dwc-dp/1.0/chronometric-age

Description: An approximation of temporal position (in the sense conveyed by https://www.w3.org/TR/owl-time/#time:TemporalPosition) that is supported via evidence.

Notes: The age of a dwc:MaterialEntity and how this age is known, whether by a dating assay, a relative association with dated material, or legacy collections information.

Examples:

`An age range associated with a specimen derived from an AMS dating assay applied to an oyster shell in the same stratum`

`An age range associated with a specimen derived from a ceramics analysis based on other materials found in the same stratum`

`A maximum age associated with a specimen derived from K-Ar dating applied to a proximal volcanic tuff found stratigraphically below the specimen`

`An age range of a specimen based on its biostratigraphic context`

`An age of a specimen based on what is reported in legacy collections data.`

dcterms:isVersionOf: http://rs.tdwg.org/chrono/terms/ChronometricAge

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
chronometricAge_pk				primary key	Yes	Yes
chronometricAgeID				weak primary key	No	No
event_fk	for	event	event_pk	foreign key	Yes	Yes
chronometricAgeProtocol_fk	followed	protocol	protocol_pk	foreign key	Yes	No
chronometricAgeConversionProtocol_fk	followed	protocol	protocol_pk	foreign key	Yes	No
materialDated_fk	dated	material	materialEntity_pk	foreign key	Yes	No
materialDatedID	dated	material	materialEntityID	weak foreign key	No	No
chronometricAgeDeterminedBy_fk	determined by	agent	agent_pk	foreign key	Yes	No
chronometricAgeDeterminedByID	determined by	agent	agentID	weak foreign key	No	No

chronometricAge_pk
Title (Label)	Chronometric Age (Primary Key)
Namespace	chrono
Table	Chronometric Age
Description	A unique identifier for a chrono:ChronometricAge.
Notes	The value in this field MAY be changed in aggregation to guarantee uniqueness.
Examples	`https://www.canadianarchaeology.ca/samples/70673`
Type	string
Constraints	{"required": true, "unique": true}
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/chronometricAgeID

chronometricAgeID
Title (Label)	Chronometric Age ID
Namespace	chrono
Table	Chronometric Age
Description	An identifier for a chrono:ChronometricAge.
Notes	The value in this field MUST be preserved in aggregation. Recommended best practice is to use a globally unique identifier.
Examples	`https://www.canadianarchaeology.ca/samples/70673`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/chronometricAgeID

event_fk
Title (Label)	Event (Foreign Key)
Namespace	dwc
Table	Chronometric Age
Description	An identifier for a dwc:Event.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/eventID

verbatimChronometricAge
Title (Label)	Verbatim Chronometric Age
Namespace	chrono
Table	Chronometric Age
Description	A verbatim age for a dwc:Event, whether reported by a dating assay, associated references, or legacy information.
Notes	For example, this could be the radiocarbon age as given in an AMS dating report. This could also be simply what is reported as the age of a specimen in legacy collections data.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/verbatimChronometricAge

chronometricAgeProtocol
Title (Label)	Chronometric Age Protocol
Namespace	chrono
Table	Chronometric Age
Description	A description of or reference to a dwc:Protocol used to determine a chrono:ChronometricAge.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/chronometricAgeProtocol

chronometricAgeProtocol_fk
Title (Label)	Chronometric Age Protocol (Foreign Key)
Namespace	dwc
Table	Chronometric Age
Description	An identifier for a dwc:Protocol used to determine a chrono:ChronometricAge.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/protocolID

uncalibratedChronometricAge
Title (Label)	Uncalibrated Chronometric Age
Namespace	chrono
Table	Chronometric Age
Description	An output of a dating assay before it is calibrated into an age using a specific conversion protocol.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/uncalibratedChronometricAge

chronometricAgeConversionProtocol
Title (Label)	Chronometric Age Conversion Protocol
Namespace	chrono
Table	Chronometric Age
Description	A description of or reference to a dwc:Protocol used to convert a chrono:uncalibratedChronometricAge into a chronometric age in years, as captured in the chrono:earliestChronometricAge, chrono:earliestChronometricAgeReferenceSystem, chrono:latestChronometricAge, and chrono:latestChronometricAgeReferenceSystem fields.
Notes	For example, calibration of conventional radiocarbon age or the currently accepted age range of a cultural or geological period.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/chronometricAgeConversionProtocol

chronometricAgeConversionProtocol_fk
Title (Label)	Chronometric Age Conversion Protocol (Foreign Key)
Namespace	dwc
Table	Chronometric Age
Description	An identifier for a dwc:Protocol used to convert a chrono:uncalibratedChronometricAge into a chronometric age in years, as captured in the chrono:earliestChronometricAge, chrono:earliestChronometricAgeReferenceSystem, chrono:latestChronometricAge, and chrono:latestChronometricAgeReferenceSystem fields.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/protocolID

earliestChronometricAge
Title (Label)	Earliest Chronometric Age
Namespace	chrono
Table	Chronometric Age
Description	A maximum/earliest/oldest possible age of a dwc:MaterialEntity as determined by a dating method.
Notes	The expected unit for this field is years. This field, if populated, must have an associated chrono:earliestChronometricAgeReferenceSystem.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/earliestChronometricAge

earliestChronometricAgeReferenceSystem
Title (Label)	Earliest Chronometric Age Reference System
Namespace	chrono
Table	Chronometric Age
Description	A reference system associated with a chrono:earliestChronometricAge.
Notes	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/earliestChronometricAgeReferenceSystem

latestChronometricAge
Title (Label)	Latest Chronometric Age
Namespace	chrono
Table	Chronometric Age
Description	A minimum/latest/youngest possible age of a dwc:MaterialEntity as determined by a dating method.
Notes	The expected unit for this field is years. This field, if populated, must have an associated latestChronometricAgeReferenceSystem.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/latestChronometricAge

latestChronometricAgeReferenceSystem
Title (Label)	Latest Chronometric Age Reference System
Namespace	chrono
Table	Chronometric Age
Description	A reference system associated with a chrono:latestChronometricAge.
Notes	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/latestChronometricAgeReferenceSystem

chronometricAgeUncertaintyInYears
Title (Label)	Chronometric Age Uncertainty In Years
Namespace	chrono
Table	Chronometric Age
Description	A temporal uncertainty of a chrono:earliestChronometricAge and chrono:latestChronometricAge in years.
Notes	The expected unit for this field is years. The value in this field is number of years before and after the values given in the earliest and latest chronometric age fields within which the actual values are estimated to be.
Type	integer
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/chronometricAgeUncertaintyInYears

chronometricAgeUncertaintyMethod
Title (Label)	Chronometric Age Uncertainty Method
Namespace	chrono
Table	Chronometric Age
Description	A method used to generate a value of chrono:ChronometricAgeUncertaintyInYears.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/chronometricAgeUncertaintyMethod

materialDated
Title (Label)	Material Dated
Namespace	chrono
Table	Chronometric Age
Description	A description of a dwc:MaterialEntity on which a chrono:ChronometricAgeProtocol was actually performed, if known.
Notes	Recommended best practice is to use a globally unique identifier.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/materialDated

materialDated_fk
Title (Label)	Material Dated (Foreign Key)
Namespace	chrono
Table	Chronometric Age
Description	An identifier for a dwc:MaterialEntity on which a chrono:ChronometricAgeProtocol was performed, if applicable.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/materialDatedID

materialDatedID
Title (Label)	Material Dated ID
Namespace	chrono
Table	Chronometric Age
Description	An identifier for a dwc:MaterialEntity on which a chrono:ChronometricAgeProtocol was performed, if applicable.
Notes	The value in this field MAY refer to a dwc:MaterialEntity within or external to the dataset in which this record originated.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/materialDatedID

materialDatedRelationship
Title (Label)	Material Dated Relationship
Namespace	chrono
Table	Chronometric Age
Description	A relationship of a chrono:materialDated to a dwc:MaterialEntity, from which a chrono:ChronometricAge of the related dwc:MaterialEntity and any related dwc:Occurrence is inferred.
Notes	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/materialDatedRelationship

chronometricAgeDeterminedBy
Title (Label)	Chronometric Age Determined By
Namespace	chrono
Table	Chronometric Age
Description	A list (concatenated and separated) of names of dcterms:Agents responsible for determining the chrono:ChronometricAge.
Notes	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/chronometricAgeDeterminedBy

chronometricAgeDeterminedBy_fk
Title (Label)	Chronometric Age Determined By (Foreign Key)
Namespace	dwc
Table	Chronometric Age
Description	An identifier for a dcterms:Agent responsible for determining a chrono:ChronometricAge.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

chronometricAgeDeterminedByID
Title (Label)	Chronometric Age Determined By ID
Namespace	dwc
Table	Chronometric Age
Description	An identifier for a dcterms:Agent responsible for determining a chrono:ChronometricAge.
Notes	The value in this field MAY refer to a dcterms:Agent within or external to the dataset in which this record originated.
Examples	`https://orcid.org/0000-0002-1825-0097`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

chronometricAgeDeterminedDate
Title (Label)	Chronometric Age Determined Date
Namespace	chrono
Table	Chronometric Age
Description	A date on which a chrono:ChronometricAge was determined.
Notes	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/chronometricAgeDeterminedDate

chronometricAgeReferences
Title (Label)	Chronometric Age References
Namespace	chrono
Table	Chronometric Age
Description	A list (concatenated and separated) of dcterms:BibliographicResources associated with a chrono:ChronometricAge.
Notes	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/chronometricAgeReferences

chronometricAgeRemarks
Title (Label)	Chronometric Age Remarks
Namespace	chrono
Table	Chronometric Age
Description	Comments or notes about a chrono:ChronometricAge.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/chronometricAgeRemarks

Chronometric Age Agent Role

Identifier: http://rs.tdwg.org/dwc-dp/1.0/chronometric-age-agent-role

Description: A role filled by a dcterms:Agent with respect to a chrono:ChronometricAge.

dcterms:isVersionOf: http://example.com/term-pending//chronometric-age-agent-role

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
chronometricAge_fk	role for	chronometric-age	chronometricAge_pk	foreign key	Yes	Yes
agent_fk	role holder	agent	agent_pk	foreign key	Yes	Yes

chronometricAge_fk
Title (Label)	Chronometric Age (Foreign Key)
Namespace	chrono
Table	Chronometric Age Agent Role
Description	An identifier for a chrono:ChronometricAge.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/chronometricAgeID

agent_fk
Title (Label)	Agent (Foreign Key)
Namespace	dwc
Table	Chronometric Age Agent Role
Description	An identifier for a dcterms:Agent.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

agentRole
Title (Label)	Agent Role
Namespace	dwc
Table	Chronometric Age Agent Role
Description	A category that best matches the nature of a role of a dcterms:Agent.
Notes	Recommended best practice is to use a controlled vocabulary for the roles appropriate to the class of resource a dcterms:AgentRole is related to.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResource

agentRoleIRI
Title (Label)	Agent Role IRI
Namespace	dwciri
Table	Chronometric Age Agent Role
Description	An IRI of the controlled vocabulary value for a role of a dcterms:Agent.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResourceID

agentRoleSource
Title (Label)	Agent Role Source
Namespace	dc
Table	Chronometric Age Agent Role
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:agentRole is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

agentRoleOrder
Title (Label)	Agent Role Order
Namespace	dwc
Table	Chronometric Age Agent Role
Description	A numerical position of an AgentRole in a set of AgentRoles that have the same combination of agentRole, agentRoleIRI, agentRoleSource and related target identifier.
Notes	One could use dwc:agentRoleOrder to create an ordered list of collectors (dwc:agentRole = 'collector') for a dwc:MaterialEntity, for example. The first would have dwc:agentRoleOrder=1, the second would have dwc:agentRoleOrder=2.
Type	integer
Constraints	{"required": true, "minimum": 1}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentRoleOrder

agentRoleDate
Title (Label)	Agent Role Date
Namespace	dwc
Table	Chronometric Age Agent Role
Description	An interval during which a dcterms:AgentRole was in effect.
Notes	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionEffectiveDate

Chronometric Age Assertion

Identifier: http://rs.tdwg.org/dwc-dp/1.0/chronometric-age-assertion

Description: A dwc:Assertion made by a dcterms:Agent about a chrono:ChronometricAge.

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/MeasurementOrFact

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
assertionID				weak primary key	No	No
chronometricAge_fk	about	chronometric-age	chronometricAge_pk	foreign key	Yes	Yes
assertionBy_fk	asserted by	agent	agent_pk	foreign key	Yes	No
assertionByID	asserted by	agent	agentID	weak foreign key	No	No
assertionProtocol_fk	followed	protocol	protocol_pk	foreign key	Yes	No

assertionID
Title (Label)	Assertion ID
Namespace	dwc
Table	Chronometric Age Assertion
Description	An identifier for a dwc:Assertion.
Notes	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": true}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionID

chronometricAge_fk
Title (Label)	Chronometric Age (Foreign Key)
Namespace	chrono
Table	Chronometric Age Assertion
Description	An identifier for a chrono:ChronometricAge.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/chronometricAgeID

verbatimAssertionType
Title (Label)	Verbatim Assertion Type
Namespace	dwc
Table	Chronometric Age Assertion
Description	A string representing the type of dwc:Assertion as it appeared in the original record.
Notes	This term is meant to allow the capture of an unaltered original name for a dwc:assertionType. This term is meant to be used in addition to dwc:assertionType, not instead of it.
Examples	`water_temp` `Fish biomass` `sampling net mesh size`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/verbatimAssertionType

assertionType
Title (Label)	Assertion Type
Namespace	dwc
Table	Chronometric Age Assertion
Description	A category that best matches the nature of a dwc:Assertion.
Notes	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`tail length` `temperature` `trap line length` `survey area` `trap type`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionType

assertionTypeIRI
Title (Label)	Assertion Type IRI
Namespace	dwciri
Table	Chronometric Age Assertion
Description	An IRI of a controlled vocabulary value for a type of dwc:Assertion.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/iri/measurementType

assertionTypeSource
Title (Label)	Assertion Type Source
Namespace	dc
Table	Chronometric Age Assertion
Description	A reference to the controlled vocabulary in which the definition of a value in dwc:assertionType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionMadeDate
Title (Label)	Assertion Made Date
Namespace	dwc
Table	Chronometric Age Assertion
Description	A date on which a dwc:Assertion was created.
Notes	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionMadeDate

assertionEffectiveDate
Title (Label)	Assertion Effective Date
Namespace	dwc
Table	Chronometric Age Assertion
Description	A date-time or time interval during which an asserted state or measurement was deemed to be in effect.
Notes	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionEffectiveDate

assertionValue
Title (Label)	Assertion Value
Namespace	dwc
Table	Chronometric Age Assertion
Description	An asserted value.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionValue

assertionValueIRI
Title (Label)	Assertion Value IRI
Namespace	dwciri
Table	Chronometric Age Assertion
Description	An IRI of the controlled vocabulary value for a value of a dwc:Assertion.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/iri/measurementValue

assertionValueSource
Title (Label)	Assertion Value Source
Namespace	dc
Table	Chronometric Age Assertion
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:assertionValue is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionUnit
Title (Label)	Assertion Unit
Namespace	dwc
Table	Chronometric Age Assertion
Description	Unit associated with the value in dwc:assertionValue.
Notes	Recommended best practice is to use a controlled vocabulary such as the Ontology of Units of Measure http://www.wurvoc.org/vocabularies/om-1.8/ of SI units, derived units, or other non-SI units accepted for use within the SI. For units that are composed of multiple parts, use the patterns as given in "A Primer for Communicating Mathematics via Plain Text" (https://cse.sc.edu/~fenner/latex-ASCII.pdf) by Stephen Fenner (e.g., `g/cm^3` for grams per cubic centimeter). For other units, provide the value as a recognizable standard (e.g., '%') or written out in full and in the plural (e.g., `individuals`). It is fine to provide non-SI units in the original language of the dataset.
Examples	`m` `s` `g` `ml`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionUnit

assertionUnitIRI
Title (Label)	Assertion Unit IRI
Namespace	dwciri
Table	Chronometric Age Assertion
Description	An IRI of a controlled vocabulary value for the unit of a dwc:assertionValue.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/iri/assertionUnit

assertionUnitSource
Title (Label)	Assertion Unit Source
Namespace	dc
Table	Chronometric Age Assertion
Description	A reference to a controlled vocabulary in which the definition of the value in dwc:assertionUnit is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionError
Title (Label)	Assertion Error
Namespace	dwc
Table	Chronometric Age Assertion
Description	A description of the potential error associated with a dwc:assertionValue.
Examples	`0.01` `normal distribution with variation of 2 m`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionError

assertionBy
Title (Label)	Assertion By
Namespace	dwc
Table	Chronometric Age Assertion
Description	A list (concatenated and separated) of names of dcterms:Agents responsible for making a dwc:Assertion.
Notes	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionBy

assertionBy_fk
Title (Label)	Assertion By (Foreign Key)
Namespace	dwc
Table	Chronometric Age Assertion
Description	An identifier for a dcterms:Agent responsible for making a dwc:Assertion.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

assertionByID
Title (Label)	Assertion By ID
Namespace	dwc
Table	Chronometric Age Assertion
Description	An identifier for a dcterms:Agent responsible for making a dwc:Assertion.
Notes	The value in this field MAY refer to a dcterms:Agent within or external to the dataset in which this record originated.
Examples	`https://orcid.org/0000-0002-1825-0097`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

assertionProtocols
Title (Label)	Assertion Protocols
Namespace	dwc
Table	Chronometric Age Assertion
Description	Names of, references to, or descriptions of dwc:Protocols used in making a dwc:Assertion.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionProtocols

assertionProtocol_fk
Title (Label)	Assertion Protocol (Foreign Key)
Namespace	dwc
Table	Chronometric Age Assertion
Description	An identifier for a dwc:Protocol used to make a dwc:Assertion.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/protocolID

assertionReferences
Title (Label)	Assertion References
Namespace	dwc
Table	Chronometric Age Assertion
Description	A list (concatenated and separated) of dcterms:BibliographicResources associated with a dwc:Assertion.
Notes	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionReferences

assertionRemarks
Title (Label)	Assertion Remarks
Namespace	dwc
Table	Chronometric Age Assertion
Description	Comments or notes about a dwc:Assertion.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionRemarks

Chronometric Age Media

Identifier: http://rs.tdwg.org/dwc-dp/1.0/chronometric-age-media

Description: A chrono:ChronometricAge as content in an ac:Media entity.

dcterms:isVersionOf: http://example.com/term-pending//chronometric-age-media

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
media_fk	this media instance	media	media_pk	foreign key	Yes	Yes
chronometricAge_fk	about	chronometric-age	chronometricAge_pk	foreign key	Yes	Yes

media_fk
Title (Label)	Media (Foreign Key)
Namespace	dcterms
Table	Chronometric Age Media
Description	An identifier for an ac:Media resource.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://purl.org/dc/terms/identifier

chronometricAge_fk
Title (Label)	Chronometric Age (Foreign Key)
Namespace	chrono
Table	Chronometric Age Media
Description	An identifier for a chrono:ChronometricAge.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/chronometricAgeID

subjectCategory
Title (Label)	Subject Category
Namespace	ac
Table	Chronometric Age Media
Description	A term to describe the content of a image or a region of interest within an image using a controlled value string.
Notes	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/CVtermLiteral

subjectCategoryIRI
Title (Label)	Subject Category IRI
Namespace	Iptc4xmpExt
Table	Chronometric Age Media
Description	An IRI of a controlled vocabulary value for the subject category of an ac:Media resource.
Notes	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://iptc.org/std/Iptc4xmpExt/2008-02-29/CVterm

subjectCategoryVocabulary
Title (Label)	Subject Category Source
Namespace	ac
Table	Chronometric Age Media
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:subjectCategory is given.
Notes	The Audiovisual Core recommended vocabularies do not need to be cited here. There is no required linkage between individual Subject Category terms and the vocabulary; the mechanism is intended to support discovery of the normative URI for a term, but not guarantee it.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectCategoryVocabulary

subjectPartLiteral
Title (Label)	Subject Part Literal
Namespace	ac
Table	Chronometric Age Media
Description	The portion or product of organism morphology, behaviour, environment, etc. that is either predominantly shown or particularly well exemplified by the ac:Media resource, denoted by a controlled value string.
Notes	Values SHOULD be selected from the Controlled Vocabulary for ac:subjectPart. It is best practice to use ac:subjectPart instead of ac:subjectPartLiteral whenever practical.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectPartLiteral

subjectPart
Title (Label)	Subject Part
Namespace	ac
Table	Chronometric Age Media
Description	The portion or product of organism morphology, behaviour, environment, etc. that is either predominantly shown or particularly well exemplified by the ac:Media resource, denoted by an IRI.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectPart

subjectOrientationLiteral
Title (Label)	Subject Orientation Literal
Namespace	ac
Table	Chronometric Age Media
Description	Specific orientation (= direction, view angle) of the subject represented in the ac:Media resource with respect to the acquisition device, denoted by a controlled value string.
Notes	Values SHOULD be selected from the Controlled Vocabulary for ac:subjectOrientation. It is best practice to use ac:subjectOrientation instead of ac:subjectOrientationLiteral whenever practical.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectOrientationLiteral

subjectOrientation
Title (Label)	Subject Orientation
Namespace	ac
Table	Chronometric Age Media
Description	Specific orientation (= direction, view angle) of the subject represented in the ac:Media resource with respect to the acquisition device.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectOrientation

physicalSetting
Title (Label)	Physical Setting
Namespace	ac
Table	Chronometric Age Media
Description	The setting of the content represented in an ac:Media resource, such as images, sounds, and movies if the provider deems them relevant.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/physicalSetting

Chronometric Age Protocol

Identifier: http://rs.tdwg.org/dwc-dp/1.0/chronometric-age-protocol

Description: A dwc:Protocol used for a chrono:ChronometricAge.

dcterms:isVersionOf: http://example.com/term-pending//chronometric-age-protocol

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
protocol_fk	followed	protocol	protocol_pk	foreign key	Yes	Yes
chronometricAge_fk	used for	chronometric-age	chronometricAge_pk	foreign key	Yes	Yes

protocol_fk
Title (Label)	Protocol (Foreign Key)
Namespace	dwc
Table	Chronometric Age Protocol
Description	An identifier for a dwc:Protocol.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/protocolID

chronometricAge_fk
Title (Label)	Chronometric Age (Foreign Key)
Namespace	chrono
Table	Chronometric Age Protocol
Description	An identifier for a chrono:ChronometricAge.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/chronometricAgeID

Chronometric Age Reference

Identifier: http://rs.tdwg.org/dwc-dp/1.0/chronometric-age-reference

Description: A dcterms:BibliographicResource related to a chrono:ChronometricAge.

dcterms:isVersionOf: http://example.com/term-pending//chronometric-age-reference

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
reference_fk	mentioned in	bibliographic-resource	reference_pk	foreign key	Yes	No
chronometricAge_fk	mentioned	chronometric-age	chronometricAge_pk	foreign key	Yes	Yes

reference_fk
Title (Label)	Reference (Foreign Key)
Namespace	dwc
Table	Chronometric Age Reference
Description	An identifier for a dcterms:BibliographicResource.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/referenceID

chronometricAge_fk
Title (Label)	Chronometric Age (Foreign Key)
Namespace	chrono
Table	Chronometric Age Reference
Description	An identifier for a chrono:ChronometricAge.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/chronometricAgeID

relationshipType
Title (Label)	Relationship Type
Namespace	dwc
Table	Chronometric Age Reference
Description	A relationship of a subject resource to a dcterms:BibliographicResource.
Notes	Recommended best practice is to use a controlled vocabulary.
Examples	`cited in` `referenced`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResource

Event

Identifier: http://rs.tdwg.org/dwc-dp/1.0/event

Description: An action, process, or set of circumstances occurring at a dcterms:Location during a period of time.

Examples:

`a material collecting event`

`a bird observation`

`a camera trap image capture`

`an organism occurrence`

`a biotic survey`

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/Event

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
event_pk				primary key	Yes	Yes
eventID				weak primary key	No	No
parentEvent_fk	happened during	event	event_pk	foreign key	Yes	No
eventProtocol_fk	followed	protocol	protocol_pk	foreign key	Yes	No
provenance_fk	has	provenance	provenance_pk	foreign key	Yes	No
recordedBy_fk	recorded by	agent	agent_pk	foreign key	Yes	No
recordedByID	recorded by	agent	agentID	weak foreign key	No	No
geologicalContext_fk	within	geological-context	geologicalContext_pk	foreign key	Yes	No
geologicalContextID	within	geological-context	geologicalContextID	weak foreign key	No	No
georeferencedBy_fk	georeferenced by	agent	agent_pk	foreign key	Yes	No
georeferencedByID	georeferenced by	agent	agentID	weak foreign key	No	No
georeferenceProtocol_fk	followed	protocol	protocol_pk	foreign key	Yes	No

event_pk
Title (Label)	Event (Primary Key)
Namespace	dwc
Table	Event
Description	A unique identifier for a dwc:Event.
Notes	The value in this field MAY be changed in aggregation to guarantee uniqueness.
Examples	`INBO:VIS:Ev:00009375`
Type	string
Constraints	{"required": true, "unique": true}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/eventID

eventID
Title (Label)	Event ID
Namespace	dwc
Table	Event
Description	An identifier for a dwc:Event.
Notes	The value in this field MUST be preserved in aggregation. Recommended best practice is to use a globally unique identifier.
Examples	`INBO:VIS:Ev:00009375`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/eventID

parentEvent_fk
Title (Label)	Parent Event (Foreign Key)
Namespace	dwc
Table	Event
Description	An identifier for a broader dwc:Event that contains this and potentially other dwc:Events.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/parentEventID

eventProtocol_fk
Title (Label)	Event Protocol (Foreign Key)
Namespace	dwc
Table	Event
Description	An identifier for a dwc:Protocol used during a dwc:Event.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/protocolID

provenance_fk
Title (Label)	Provenance (Foreign Key)
Namespace	dcterms
Table	Event
Description	An identifier for a dwc:Provenance.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/provenanceID

preferredEventName
Title (Label)	Preferred Event Name
Namespace	dcterms
Table	Event
Description	The name of a dwc:Event preferred in searches and results.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/title

eventCategory
Title (Label)	Event Category
Namespace	dwc
Table	Event
Description	A broad category that best matches the nature of a dwc:Event.
Notes	Recommended best practice is to use a limited, tightly controlled vocabulary.
Examples	`material collection` `nucleotide analysis` `occurrence` `organism interaction` `survey` `context`
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/eventCategory

eventType
Title (Label)	Event Type
Namespace	dwc
Table	Event
Description	A narrow category that best matches the nature of a dwc:Event.
Notes	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`BioBlitz` `camera trap deployment` `expedition` `project` `site visit` `trawl`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/eventType

datasetName
Title (Label)	Dataset Name
Namespace	dwc
Table	Event
Description	A name of a source dataset.
Examples	`Grinnell Resurvey Mammals` `Lacey Ctenomys Recaptures`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/datasetName

datasetID
Title (Label)	Dataset ID
Namespace	dwc
Table	Event
Description	An identifier for a source dataset.
Notes	Recommended best practice is to use a globally unique identifier.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/datasetID

fieldNumber
Title (Label)	Field Number
Namespace	dwc
Table	Event
Description	An identifier given to a dwc:Event in the field.
Notes	Often serves as a link between field notes and a dwc:Event. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`RV Sol 87-03-08`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/fieldNumber

recordedBy
Title (Label)	Recorded By
Namespace	dwc
Table	Event
Description	A name for a dcterms:Agent responsible for recording a dwc:Event.
Notes	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `). This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`José E. Crespo` `Oliver P. Pearson \| Anita K. Pearson` (where the value in dwc:collectorNumber `OPP 7101` corresponds to the collector number for the specimen in the field catalog of Oliver P. Pearson)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/recordedBy

recordedBy_fk
Title (Label)	Recorded By (Foreign Key)
Namespace	dwc
Table	Event
Description	An identifier for a dcterms:Agent responsible for recording a dwc:Event.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/version/recordedByID

recordedByID
Title (Label)	Recorded By ID
Namespace	dwc
Table	Event
Description	An identifier for a dcterms:Agent responsible for recording a dwc:Event.
Notes	The value in this field MAY refer to a dcterms:Agent within or external to the dataset in which this record originated.
Examples	`https://orcid.org/0000-0002-1825-0097` `https://ror.org/00mh9zx15`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/version/recordedByID

eventDurationValue
Title (Label)	Event Duration Value
Namespace	eco
Table	Event
Description	The numeric value for the duration of a dwc:Event.
Notes	`An eco:eventDurationValue must have a corresponding eco:eventDurationUnit.`
Examples	`1` `30`
Type	number
Constraints	{"minimum": 0}
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/eventDurationValue

eventDurationUnit
Title (Label)	Event Duration Unit
Namespace	eco
Table	Event
Description	Units associated with a value in eco:eventDurationValue.
Notes	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`minutes` `hours` `days` `months` `years`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/eventDurationUnit

eventDate
Title (Label)	Event Date
Namespace	dwc
Table	Event
Description	A date-time or time interval during which a dwc:Event occurred.
Notes	Recommended best practice is to use a date that conforms to ISO 8601-1:2019. Not suitable for a time in a geological context.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/eventDate

eventTime
Title (Label)	Event Time
Namespace	dwc
Table	Event
Description	The time or interval during which a dwc:Event occurred.
Notes	Recommended best practice is to use a time of day that conforms to ISO 8601-1:2019.
Examples	`14:07-06:00` (at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `08:40:21Z` (at or after 8:40:21am and before 8:41:22am UTC) `13:00:00Z/15:30:00Z` (at or after 1pm and before 3:30pm UTC)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/eventTime

startDayOfYear
Title (Label)	Start Day Of Year
Namespace	dwc
Table	Event
Description	The earliest integer day of the year on which a dwc:Event occurred.
Notes	The value is 1 for January 1 and 365 for December 31, except in a leap year, in which case it is 366.
Examples	`1` (1 January) `32` (1 February) `366` (31 December) `365` (30 December in a leap year, 31 December in a non-leap year)
Type	integer
Constraints	{"minimum": 1, "maximum": 366}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/startDayOfYear

endDayOfYear
Title (Label)	End Day Of Year
Namespace	dwc
Table	Event
Description	The latest integer day of the year on which a dwc:Event occurred.
Notes	The value is 1 for January 1 and 365 for December 31, except in a leap year, in which case it is 366.
Examples	`1` (1 January) `32` (1 February) `366` (31 December) `365` (30 December in a leap year, 31 December in a non-leap year)
Type	integer
Constraints	{"minimum": 1, "maximum": 366}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/endDayOfYear

year
Title (Label)	Year
Namespace	dwc
Table	Event
Description	The four-digit year in which the dwc:Event occurred, according to the Common Era Calendar.
Examples	`1160` `2008`
Type	integer
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/year

month
Title (Label)	Month
Namespace	dwc
Table	Event
Description	The integer month in which the dwc:Event occurred.
Examples	`1` (January) `10` (October)
Type	integer
Constraints	{"minimum": 1, "maximum": 12}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/month

day
Title (Label)	Day
Namespace	dwc
Table	Event
Description	The integer day of the month on which the dwc:Event occurred.
Examples	`9` `28`
Type	integer
Constraints	{"minimum": 1, "maximum": 31}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/day

verbatimEventDate
Title (Label)	Verbatim Event Date
Namespace	dwc
Table	Event
Description	The verbatim original representation of the date and time information for a dwc:Event.
Examples	`spring 1910` `Marzo 2002` `1999-03-XX` `17IV1934`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/verbatimEventDate

verbatimLocality
Title (Label)	Verbatim Locality
Namespace	dwc
Table	Event
Description	An original textual description of a dcterms:Location.
Examples	`25 km NNE Bariloche por R. Nac. 237`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/verbatimLocality

verbatimElevation
Title (Label)	Verbatim Elevation
Namespace	dwc
Table	Event
Description	An original description of the elevation of a dcterms:Location.
Examples	`100-200 m`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/verbatimElevation

verbatimDepth
Title (Label)	Verbatim Depth
Namespace	dwc
Table	Event
Description	The original description of the depth below the local surface.
Examples	`100-200 m`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/verbatimDepth

verbatimCoordinates
Title (Label)	Verbatim Coordinates
Namespace	dwc
Table	Event
Description	Verbatim original spatial coordinates of a dcterms:Location.
Notes	The coordinate ellipsoid, geodeticDatum, or full Spatial Reference System (SRS) for these coordinates should be stored in dwc:verbatimSRS and the coordinate system should be stored in dwc:verbatimCoordinateSystem.
Examples	`41 05 54S 121 05 34W` `17T 630000 4833400`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/verbatimCoordinates

verbatimLatitude
Title (Label)	Verbatim Latitude
Namespace	dwc
Table	Event
Description	A verbatim original latitude of a dcterms:Location.
Notes	The coordinate ellipsoid, geodeticDatum, or full Spatial Reference System (SRS) for these coordinates should be stored in dwc:verbatimSRS and the coordinate system should be stored in dwc:verbatimCoordinateSystem.
Examples	`41 05 54.03S`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/verbatimLatitude

verbatimLongitude
Title (Label)	Verbatim Longitude
Namespace	dwc
Table	Event
Description	A verbatim original longitude of a dcterms:Location.
Notes	The coordinate ellipsoid, geodeticDatum, or full Spatial Reference System (SRS) for these coordinates should be stored in dwc:verbatimSRS and the coordinate system should be stored in dwc:verbatimCoordinateSystem.
Examples	`121d 10' 34" W`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/verbatimLongitude

verbatimCoordinateSystem
Title (Label)	Verbatim Coordinate System
Namespace	dwc
Table	Event
Description	A coordinate format for dwc:verbatimLatitude and dwc:verbatimLongitude or dwc:verbatimCoordinates.
Notes	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`decimal degrees` `degrees decimal minutes` `degrees minutes seconds` `UTM`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/verbatimCoordinateSystem

verbatimSRS
Title (Label)	Verbatim SRS
Namespace	dwc
Table	Event
Description	The ellipsoid, geodetic datum, or spatial reference system (SRS) upon which coordinates given in dwc:verbatimLatitude and dwc:verbatimLongitude, or dwc:verbatimCoordinates are based.
Notes	Recommended best practice is to use the EPSG code of the SRS, if known. Otherwise use a controlled vocabulary for the name or code of the geodetic datum, if known. Otherwise use a controlled vocabulary for the name or code of the ellipsoid, if known. If none of these is known, use the value `not recorded`. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`EPSG:4326` `WGS84` `NAD27` `Campo Inchauspe` `European 1950` `Clarke 1866` `not recorded`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/verbatimSRS

georeferenceVerificationStatus
Title (Label)	Georeference Verification Status
Namespace	dwc
Table	Event
Description	A categorical description of the extent to which the georeference has been verified to represent the best possible spatial description for the dcterms:Location of the dwc:Occurrence.
Notes	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`unable to georeference` `requires georeference` `requires verification` `verified by data custodian` `verified by contributor`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/georeferenceVerificationStatus

habitat
Title (Label)	Habitat
Namespace	dwc
Table	Event
Description	A category or description of the habitat in which the dwc:Event occurred.
Notes	This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`oak savanna` `pre-cordilleran steppe`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/habitat

isVegetationCoverReported
Title (Label)	Is Vegetation Cover Reported
Namespace	eco
Table	Event
Description	A vegetation cover metric was reported.
Notes	Typically values or descriptions of vegetation cover would be captured under the term eco:verbatimSiteDescriptions. Recommended best practice is to follow the TDWG Boolean Controlled Vocabulary http://rs.tdwg.org/tag/doc/boolean/.
Examples	`true` `false`
Type	boolean
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/isVegetationCoverReported

sampledSubstrateCategory
Title (Label)	Sampled Substrate Category
Namespace	dwc
Table	Event
Description	A category or type of substrate sampled during a dwc:Event.
Notes	Recommended best practice is to use a controlled vocabulary and separate the values in a list with space vertical bar space ( \| ).
Examples	`vegetation` `soil` `ocean`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/sampledSubstrateCategory

sampledSubstrateLayer
Title (Label)	Sampled Substrate Layer
Namespace	dwc
Table	Event
Description	A list (concatenated and separated) of substrate layers sampled during a dwc:Event.
Notes	Recommended best practice is to use a controlled vocabulary and separate the values in a list with space vertical bar space ( \| ).
Examples	`forest floor` `herbaceous \| shrub` `understory` `canopy` `organic (O)` `surface (A)` `eluviated (E)` `subsoil (B)` `parent material (C)` `bedrock (R)` `epipelagic \| mesopelagic` `bathypelagic` `abysopelagic` `hadalpelagic`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/sampledSubstrateLayer

fieldNotes
Title (Label)	Field Notes
Namespace	dwc
Table	Event
Description	One of a) an indicator of the existence of, b) a reference to (publication, URI), or c) the text of notes taken in the field about the dwc:Event.
Notes	This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`Notes available in the Grinnell-Miller Library.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/fieldNotes

reportedExtremeConditions
Title (Label)	Reported Extreme Conditions
Namespace	eco
Table	Event
Description	A description of any extreme weather or environmental conditions that may have affected a dwc:Event.
Examples	`{"minimumTemperatureInDegreesFahrenheit": 18, "maximumTemperatureInDegreesFahrenheit": 32}`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/reportedExtremeConditions

reportedWeather
Title (Label)	Reported Weather
Namespace	eco
Table	Event
Description	A list of weather or climatic conditions present during a dwc:Event.
Notes	Recommended best practice is to use a key:value encoding schema for a data interchange format such as JSON.
Examples	`flooding during week 3 of surveys` `rockslide at site 2`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/reportedWeather

eventReferences
Title (Label)	Event References
Namespace	dwc
Table	Event
Description	A list (concatenated and separated) of dcterms:BibliographicResources associated with a dwc:Event.
Notes	Recommended best practice is to separate the values in a list with space vertical bar space ( \| ). Note that the intended usage of the term dcterms:references in Darwin Core is to point to the definitive source representation of the resource, if one is available. Note also that the intended usage of dcterms:bibliographicCitation in Darwin Core is to provide the preferred way to cite the resource itself.
Examples	`http://www.sciencemag.org/cgi/content/abstract/322/5899/261` `Christopher J. Conroy, Jennifer L. Neuwald. 2008. Phylogeographic study of the California vole, Microtus californicus Journal of Mammalogy, 89(3):755-767.` `Steven R. Hoofer and Ronald A. Van Den Bussche. 2001. Phylogenetic Relationships of Plecotine Bats and Allies Based on Mitochondrial Ribosomal Sequences. Journal of Mammalogy 82(1):131-137. \| Walker, Faith M., Jeffrey T. Foster, Kevin P. Drees, Carol L. Chambers. 2014. Spotted bat (Euderma maculatum) microsatellite discovery using illumina sequencing. Conservation Genetics Resources.` `https://doi.org/10.3897/BDJ.14.e177525`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/associatedReferences

eventRemarks
Title (Label)	Event Remarks
Namespace	dwc
Table	Event
Description	Comments or notes about the dwc:Event.
Examples	`After the recent rains the river is nearly at flood stage.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/eventRemarks

geologicalContext_fk
Title (Label)	Geological Context (Foreign Key)
Namespace	dwc
Table	Event
Description	An identifier for a dwc:GeologicalContext.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/geologicalContextID

geologicalContextID
Title (Label)	Geological Context ID
Namespace	dwc
Table	Event
Description	An identifier for a dwc:GeologicalContext.
Notes	The value in this field may refer to a dwc:GeologicalContext within or external to the dataset in which this record originated.
Examples	`https://opencontext.org/subjects/e54377f7-4452-4315-b676-40679b10c4d9`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/geologicalContextID

locationID
Title (Label)	Location ID
Namespace	dwc
Table	Event
Description	An identifier for a dcterms:Location.
Notes	Recommended best practice is to use a globally unique identifier.
Examples	`https://opencontext.org/subjects/768A875F-E205-4D0B-DE55-BAB7598D0FD1`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/locationID

siteNumber
Title (Label)	Site Number
Namespace	dwc
Table	Event
Description	An identifier (preferably globally unambiguous) for a named site.
Examples	`USGS CENO LOC 21387`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/siteNumber

higherGeographyID
Title (Label)	Higher Geography ID
Namespace	dwc
Table	Event
Description	An identifier for the geographic region within which the dcterms:Location occurred.
Notes	Recommended best practice is to use a persistent identifier from a controlled vocabulary such as the Getty Thesaurus of Geographic Names.
Examples	`http://vocab.getty.edu/tgn/1002002` (Antártida e Islas del Atlántico Sur, Territorio Nacional de la Tierra del Fuego, Argentina).
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/higherGeographyID

higherGeography
Title (Label)	Higher Geography
Namespace	dwc
Table	Event
Description	A list (concatenated and separated) of geographic names less specific than the information captured in the dwc:locality term.
Notes	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `), with terms in order from least specific to most specific.
Examples	`North Atlantic Ocean` `South America \| Argentina \| Patagonia \| Parque Nacional Nahuel Huapi \| Neuquén \| Los Lagos` with accompanying values `South America` (continent) `Argentina` (country), `Neuquén` (first order division), and `Los Lagos` (second order division)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/higherGeography

continent
Title (Label)	Continent
Namespace	dwc
Table	Event
Description	The name of the continent in which the dcterms:Location occurs.
Notes	Recommended best practice is to use a controlled vocabulary such as the Getty Thesaurus of Geographic Names. Recommended best practice is to leave this field blank if the dcterms:Location spans multiple entities at this administrative level or if the dcterms:Location might be in one or another of multiple possible entities at this level. Multiplicity and uncertainty of the geographic entity can be captured either in the term dwc:higherGeography or in the term dwc:locality, or both.
Examples	`Africa` `Antarctica` `Asia` `Europe` `North America` `Oceania` `South America`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/continent

waterBody
Title (Label)	Water Body
Namespace	dwc
Table	Event
Description	The name of the water body in which the dcterms:Location occurs.
Notes	Recommended best practice is to use a controlled vocabulary such as the Getty Thesaurus of Geographic Names.
Examples	`Indian Ocean` `Baltic Sea` `Hudson River` `Lago Nahuel Huapi`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/waterBody

islandGroup
Title (Label)	Island Group
Namespace	dwc
Table	Event
Description	The name of the island group in which the dcterms:Location occurs.
Notes	Recommended best practice is to use a controlled vocabulary such as the Getty Thesaurus of Geographic Names.
Examples	`Alexander Archipelago` `Archipiélago Diego Ramírez` `Seychelles`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/islandGroup

island
Title (Label)	Island
Namespace	dwc
Table	Event
Description	The name of the island on or near which the dcterms:Location occurs.
Notes	Recommended best practice is to use a controlled vocabulary such as the Getty Thesaurus of Geographic Names.
Examples	`Nosy Be` `Bikini Atoll` `Vancouver` `Viti Levu` `Zanzibar`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/island

country
Title (Label)	Country
Namespace	dwc
Table	Event
Description	The name of the country or major administrative unit in which the dcterms:Location occurs.
Notes	Recommended best practice is to use a controlled vocabulary such as the Getty Thesaurus of Geographic Names. Recommended best practice is to leave this field blank if the dcterms:Location spans multiple entities at this administrative level or if the dcterms:Location might be in one or another of multiple possible entities at this level. Multiplicity and uncertainty of the geographic entity can be captured either in the term dwc:higherGeography or in the term dwc:locality, or both.
Examples	`Denmark` `Colombia` `España`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/country

countryCode
Title (Label)	Country Code
Namespace	dwc
Table	Event
Description	The standard code for the country in which the dcterms:Location occurs.
Notes	Recommended best practice is to use an ISO 3166-1-alpha-2 country code, or 'ZZ' (for an unknown location or a location unassignable to a single country code), or 'XZ' (for the high seas beyond national jurisdictions). Multiplicity and uncertainty of the geographic entity can be captured either in the term dwc:higherGeography or in the term dwc:locality, or both.
Examples	`AR` `SV` `XZ` `ZZ`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/countryCode

stateProvince
Title (Label)	First Order Division
Namespace	dwc
Table	Event
Description	The name of the next smaller administrative region than country (state, province, canton, department, region, etc.) in which the dcterms:Location occurs.
Notes	Recommended best practice is to use a controlled vocabulary such as the Getty Thesaurus of Geographic Names. Recommended best practice is to leave this field blank if the dcterms:Location spans multiple entities at this administrative level or if the dcterms:Location might be in one or another of multiple possible entities at this level. Multiplicity and uncertainty of the geographic entity can be captured either in the term dwc:higherGeography or in the term dwc:locality, or both.
Examples	`Montana` `Minas Gerais` `Córdoba`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/stateProvince

county
Title (Label)	Second Order Division
Namespace	dwc
Table	Event
Description	The full, unabbreviated name of the next smaller administrative region than stateProvince (county, shire, department, etc.) in which the dcterms:Location occurs.
Notes	Recommended best practice is to use a controlled vocabulary such as the Getty Thesaurus of Geographic Names. Recommended best practice is to leave this field blank if the dcterms:Location spans multiple entities at this administrative level or if the dcterms:Location might be in one or another of multiple possible entities at this level. Multiplicity and uncertainty of the geographic entity can be captured either in the term dwc:higherGeography or in the term dwc:locality, or both.
Examples	`Missoula` `Los Lagos` `Mataró`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/county

municipality
Title (Label)	Municipality
Namespace	dwc
Table	Event
Description	The full, unabbreviated name of the next smaller administrative region than county (city, municipality, etc.) in which the dcterms:Location occurs. Do not use this term for a nearby named place that does not contain the actual dcterms:Location.
Notes	Recommended best practice is to use a controlled vocabulary such as the Getty Thesaurus of Geographic Names. Recommended best practice is to leave this field blank if the dcterms:Location spans multiple entities at this administrative level or if the dcterms:Location might be in one or another of multiple possible entities at this level. Multiplicity and uncertainty of the geographic entity can be captured either in the term dwc:higherGeography or in the term dwc:locality, or both.
Examples	`Holzminden` `Araçatuba` `Ga-Segonyana`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/municipality

locality
Title (Label)	Locality
Namespace	dwc
Table	Event
Description	The specific description of the place.
Notes	Less specific geographic information can be provided in other geographic terms (dwc:higherGeography, dwc:continent, dwc:country, dwc:stateProvince, dwc:county, dwc:municipality, dwc:waterBody, dwc:island, dwc:islandGroup). This term may contain information modified from the original to correct perceived errors or standardize the description.
Examples	`Bariloche, 25 km NNE via Ruta Nacional 40 (=Ruta 237)` `Queets Rainforest, Olympic National Park`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/locality

namedPlace
Title (Label)	Named Place
Namespace	dwc
Table	Event
Description	The full, unabbreviated name of a geographic location not otherwise categorized by a dcterms:Location property that is naturally occurring or anthropogenic in origin within a historical, administrative, or cultural context in which a dcterms:Location occurs.
Notes	Recommended best practice is to leave this field blank if the dcterms:Location spans multiple entities or may be in multiple possible entities that meet the term definition. For named places represented as URIs or global unique identifiers, please use dwc:locationID.
Examples	`11th Level, Bergwerksglücker Lode, Wiemannsbucht Mine` `Craigleith Quarry` `Red Cloud Mine` `NEON Niwot Ridge Mountain Research Station (NIWO)` `Hagerman Fossil Beds` `Mauna Kea`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/namedPlace

minimumElevationInMeters
Title (Label)	Minimum Elevation In Meters
Namespace	dwc
Table	Event
Description	The least elevation within a range of elevations, measured relative to the vertical reference surface indicated by the value of dwc:verticalDatum.
Notes	See https://docs.gbif.org/georeferencing-best-practices/1.0/en/#img-depth-elevation-distance-above-surface.
Examples	`-100` `802`
Type	number
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/minimumElevationInMeters

maximumElevationInMeters
Title (Label)	Maximum Elevation In Meters
Namespace	dwc
Table	Event
Description	The greatest elevation within a range of elevations, measured relative to the vertical reference surface indicated by the value of dwc:verticalDatum.
Notes	See https://docs.gbif.org/georeferencing-best-practices/1.0/en/#img-depth-elevation-distance-above-surface.
Examples	`-205` `1236`
Type	number
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/maximumElevationInMeters

verticalDatum
Title (Label)	Vertical Datum
Namespace	dwc
Table	Event
Description	The vertical datum used as the reference upon which the values in the elevation terms are based.
Notes	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`EGM84` `EGM96` `EGM2008` `PGM2000A` `PGM2004` `PGM2006` `PGM2007` `EPSG:7030` `not recorded`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/verticalDatum

minimumDepthInMeters
Title (Label)	Minimum Depth In Meters
Namespace	dwc
Table	Event
Description	The least depth within a range of depths, measured relative to the vertical reference surface indicated by the value of dwc:verticalDatum.
Notes	See https://docs.gbif.org/georeferencing-best-practices/1.0/en/#img-depth-elevation-distance-above-surface.
Examples	`0` `100`
Type	number
Constraints	{"minimum": 0, "maximum": 11000}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/minimumDepthInMeters

maximumDepthInMeters
Title (Label)	Maximum Depth In Meters
Namespace	dwc
Table	Event
Description	The greatest depth within a range of depths, measured relative to the vertical reference surface indicated by the value of dwc:verticalDatum.
Notes	See https://docs.gbif.org/georeferencing-best-practices/1.0/en/#img-depth-elevation-distance-above-surface.
Examples	`0` `200`
Type	number
Constraints	{"minimum": 0, "maximum": 11000}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/maximumDepthInMeters

minimumDistanceAboveSurfaceInMeters
Title (Label)	Minimum Distance Above Surface In Meters
Namespace	dwc
Table	Event
Description	The lesser distance in a range of distance from a reference surface in the vertical direction, in meters. Use positive values for locations above the surface, negative values for locations below. If depth measures are given, the reference surface is the location given by the depth, otherwise the reference surface is the location given by the elevation.
Notes	See https://docs.gbif.org/georeferencing-best-practices/1.0/en/#img-depth-elevation-distance-above-surface.
Examples	`-1.5` (below the surface) `4.2` (above the surface) For a 1.5 meter sediment core from the bottom of a lake (at depth 20m) at 300m elevation: verbatimElevation: `300m` minimumElevationInMeters: `300`, maximumElevationInMeters: `300`, verbatimDepth: `20m`, minimumDepthInMeters: `20`, maximumDepthInMeters: `20`, minimumDistanceAboveSurfaceInMeters: `0`, maximumDistanceAboveSurfaceInMeters: `-1.5`.
Type	number
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/minimumDistanceAboveSurfaceInMeters

maximumDistanceAboveSurfaceInMeters
Title (Label)	Maximum Distance Above Surface In Meters
Namespace	dwc
Table	Event
Description	The greater distance in a range of distance from a reference surface in the vertical direction, in meters. Use positive values for locations above the surface, negative values for locations below. If depth measures are given, the reference surface is the location given by the depth, otherwise the reference surface is the location given by the elevation.
Notes	See https://docs.gbif.org/georeferencing-best-practices/1.0/en/#img-depth-elevation-distance-above-surface.
Examples	`-1.5` (below the surface) `4.2` (above the surface) For a 1.5 meter sediment core from the bottom of a lake (at depth 20m) at 300m elevation: verbatimElevation: `300m` minimumElevationInMeters: `300`, maximumElevationInMeters: `300`, verbatimDepth: `20m`, minimumDepthInMeters: `20`, maximumDepthInMeters: `20`, minimumDistanceAboveSurfaceInMeters: `0`, maximumDistanceAboveSurfaceInMeters: `-1.5`.
Type	number
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/maximumDistanceAboveSurfaceInMeters

locationAccordingTo
Title (Label)	Location According To
Namespace	dwc
Table	Event
Description	Information about the source of this dcterms:Location information. Could be a publication (gazetteer), institution, or team of individuals.
Notes	This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`Getty Thesaurus of Geographic Names` `GADM`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/locationAccordingTo

locationRemarks
Title (Label)	Location Remarks
Namespace	dwc
Table	Event
Description	Comments or notes about the dcterms:Location.
Examples	`under water since 2005`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/locationRemarks

decimalLatitude
Title (Label)	Decimal Latitude
Namespace	dwc
Table	Event
Description	A geographic latitude (in decimal degrees, using the spatial reference system given in dwc:geodeticDatum) of a dcterms:Location.
Notes	Positive values are north of the Equator, negative values are south of it. Valid values lie between -90 and 90, inclusive.
Examples	`-41.0983423`
Type	number
Constraints	{"minimum": -90, "maximum": 90}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/decimalLatitude

decimalLongitude
Title (Label)	Decimal Longitude
Namespace	dwc
Table	Event
Description	A geographic longitude (in decimal degrees, using the spatial reference system given in dwc:geodeticDatum) of a dcterms:Location.
Notes	Positive values are east of the Greenwich Meridian, negative values are west of it. Valid values lie between -180 and 180, inclusive.
Examples	`-121.1761111`
Type	number
Constraints	{"minimum": -180, "maximum": 180}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/decimalLongitude

geodeticDatum
Title (Label)	Geodetic Datum
Namespace	dwc
Table	Event
Description	The ellipsoid, geodetic datum, or spatial reference system (SRS) upon which the geographic coordinates given in dwc:decimalLatitude and dwc:decimalLongitude are based.
Notes	Recommended best practice is to use the EPSG code of the SRS, if known. Otherwise use a controlled vocabulary for the name or code of the geodetic datum, if known. Otherwise use a controlled vocabulary for the name or code of the ellipsoid, if known. If none of these is known, use the value `not recorded`. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for a string literal value.
Examples	`EPSG:4326` `WGS84` `NAD27` `Campo Inchauspe` `European 1950` `Clarke 1866` `not recorded`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/geodeticDatum

coordinateUncertaintyInMeters
Title (Label)	Coordinate Uncertainty In Meters
Namespace	dwc
Table	Event
Description	A horizontal distance (in meters) from a given dwc:decimalLatitude and dwc:decimalLongitude describing the smallest circle containing the whole of the dcterms:Location. Zero is not a valid value for this term.
Notes	Leave the value empty if the uncertainty is unknown, cannot be estimated, or is not applicable (because there are no coordinates).
Examples	`30` (reasonable lower limit on or after 2000-05-01 of a GPS reading under good conditions if the actual precision was not recorded at the time) `100` (reasonable lower limit before 2000-05-01 of a GPS reading under good conditions if the actual precision was not recorded at the time) `71` (uncertainty for a UTM coordinate having 100 meter precision and a known spatial reference system)
Type	number
Constraints	{"minimum": 1, "maximum": 20037509}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/coordinateUncertaintyInMeters

coordinatePrecision
Title (Label)	Coordinate Precision
Namespace	dwc
Table	Event
Description	A decimal representation of the precision of the coordinates given in the dwc:decimalLatitude and dwc:decimalLongitude.
Examples	`0.00001` (normal GPS limit for decimal degrees) `0.000278` (nearest second) `0.01667` (nearest minute) `1.0` (nearest degree)
Type	number
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/coordinatePrecision

pointRadiusSpatialFit
Title (Label)	Point Radius Spatial Fit
Namespace	dwc
Table	Event
Description	A ratio of the area of a point-radius (dwc:decimalLatitude, dwc:decimalLongitude, dwc:coordinateUncertaintyInMeters) to the area of a true (original, or most specific) spatial representation of a dcterms:Location.
Notes	Legal values are 0, greater than or equal to 1, or undefined. A value of 1 is an exact match or 100% overlap. A value of 0 should be used if the given point-radius does not completely contain the original representation. The pointRadiusSpatialFit is undefined (and should be left empty) if the original representation is any geometry without area (e.g., a point or polyline) and without uncertainty and the given georeference is not that same geometry (without uncertainty). If both the original and the given georeference are the same point, the pointRadiusSpatialFit is 1. Detailed explanations with graphical examples can be found in the Georeferencing Best Practices, Chapman and Wieczorek, 2020 (https://doi.org/10.15468/doc-gg7h-s853).
Examples	`0` `1` `1.5708`
Type	number
Constraints	{"minimum": 0}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/pointRadiusSpatialFit

footprintWKT
Title (Label)	Footprint WKT
Namespace	dwc
Table	Event
Description	A Well-Known Text (WKT) representation of the shape (footprint, geometry) that defines a dcterms:Location.
Notes	A dcterms:Location may have both a point-radius representation (see dwc:decimalLatitude) and a footprint representation, and they may differ from each other.
Examples	`POLYGON ((10 20, 11 20, 11 21, 10 21, 10 20))` (the one-degree bounding box with opposite corners at longitude=10, latitude=20 and longitude=11, latitude=21)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/footprintWKT

footprintSRS
Title (Label)	Footprint SRS
Namespace	dwc
Table	Event
Description	The ellipsoid, geodetic datum, or spatial reference system (SRS) upon which the geometry given in dwc:footprintWKT is based.
Notes	Recommended best practice is to use the EPSG code of the SRS, if known. Otherwise use a controlled vocabulary for the name or code of the geodetic datum, if known. Otherwise use a controlled vocabulary for the name or code of the ellipsoid, if known. If none of these is known, use the value `not recorded`. It is also permitted to provide the SRS in Well-Known-Text, especially if no EPSG code provides the necessary values for the attributes of the SRS. Do not use this term to describe the SRS of the dwc:decimalLatitude and dwc:decimalLongitude, nor of any verbatim coordinates - use the dwc:geodeticDatum and dwc:verbatimSRS instead. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`EPSG:4326` `GEOGCS["GCS_WGS_1984", DATUM["D_WGS_1984", SPHEROID["WGS_1984",6378137,298.257223563]], PRIMEM["Greenwich",0], UNIT["Degree",0.0174532925199433]]` (WKT for the standard WGS84 Spatial Reference System EPSG:4326) `not recorded`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/footprintSRS

footprintSpatialFit
Title (Label)	Footprint Spatial Fit
Namespace	dwc
Table	Event
Description	A ratio of the area of a footprint (dwc:footprintWKT) to the area of a true (original, or most specific) spatial representation of a dcterms:Location.
Notes	Legal values are 0, greater than or equal to 1, or undefined. A value of 1 is an exact match or 100% overlap. A value of 0 should be used if the given footprint does not completely contain the original representation. A dwc:footprintSpatialFit is undefined (and should be left empty) if the original representation is any geometry without area (e.g., a point or polyline) and without uncertainty and the given georeference is not that same geometry (without uncertainty). If both the original and the given georeference are the same point, a dwc:footprintSpatialFit is 1. Detailed explanations with graphical examples can be found in the Georeferencing Best Practices, Chapman and Wieczorek, 2020 (https://doi.org/10.15468/doc-gg7h-s853).
Examples	`0` `1` `1.5708`
Type	number
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/footprintSpatialFit

georeferencedBy
Title (Label)	Georeferenced By
Namespace	dwc
Table	Event
Description	A name for a dcterms:Agent responsible for providing a georeference.
Notes	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `). This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`Brad Millen (ROM)` `Kristina Yamamoto \| Janet Fang`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/georeferencedBy

georeferencedBy_fk
Title (Label)	Georeferenced By (Foreign Key)
Namespace	dwc
Table	Event
Description	An identifier for a dcterms:Agent responsible for determining a georeference for a dwc:Event.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

georeferencedByID
Title (Label)	Georeferenced By ID
Namespace	dwc
Table	Event
Description	An identifier for a dcterms:Agent responsible for determining a georeference for a dwc:Event.
Notes	The value in this field MAY refer to a dcterms:Agent within or external to the dataset in which this record originated.
Examples	`https://orcid.org/0000-0002-1825-0097`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

georeferencedDate
Title (Label)	Georeferenced Date
Namespace	dwc
Table	Event
Description	The date on which the dcterms:Location was georeferenced.
Notes	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/georeferencedDate

georeferenceProtocol
Title (Label)	Georeference Protocol
Namespace	dwc
Table	Event
Description	A description or reference to a dwc:Protocol used to determine a spatial footprint, coordinates, and uncertainties.
Notes	This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`Georeferencing Quick Reference Guide (Zermoglio et al. 2020, https://doi.org/10.35035/e09p-h128)`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/georeferenceProtocol

georeferenceProtocol_fk
Title (Label)	Georeference Protocol (Foreign Key)
Namespace	dwc
Table	Event
Description	An identifier for a dwc:Protocol used to determine a spatial footprint, coordinates, and uncertainties.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/protocolID

georeferenceSources
Title (Label)	Georeference Sources
Namespace	dwc
Table	Event
Description	A list (concatenated and separated) of maps, gazetteers, or other resources used to georeference a dcterms:Location, described specifically enough to allow anyone in the future to use the same resources.
Notes	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `). This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`GeoLocate` `GeoPick` `https://www.geonames.org/` `USGS 1:24000 Florence Montana Quad 1967 \| Terrametrics 2008 on Google Earth`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/georeferenceSources

georeferenceRemarks
Title (Label)	Georeference Remarks
Namespace	dwc
Table	Event
Description	Comments or notes about the spatial description determination, explaining assumptions made in addition or opposition to the those formalized in the method referred to in dwc:georeferenceProtocol.
Examples	`Assumed distance by road (Hwy. 101)`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/georeferenceRemarks

preferredSpatialRepresentation
Title (Label)	Preferred Spatial Representation
Namespace	dwc
Table	Event
Description	An indication of which spatial representation best represents the dcterms:Location.
Notes	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`point-radius` `footprint`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/preferredSpatialRepresentation

informationWithheld
Title (Label)	Information Withheld
Namespace	dwc
Table	Event
Description	Additional information that exists about a resource, but that is not shared publicly. Suggests that alternative data of higher quality may be available on request.
Notes	This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`location information not given for endangered species` `collector identities withheld \| ask about tissue samples`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/informationWithheld

dataGeneralizations
Title (Label)	Data Generalizations
Namespace	dwc
Table	Event
Description	Actions taken to make the shared data less specific or complete than in its original form. Suggests that alternative data of higher quality may be available on request.
Notes	This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`Coordinates generalized from original GPS coordinates to the nearest half degree grid cell.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/dataGeneralizations

feedbackURL
Title (Label)	Feedback URL
Namespace	dwc
Table	Event
Description	A uniform resource locator (URL) that points to a webpage on which a form may be submitted to gather feedback about the record.
Notes	Recommended best practice is to optionally include query strings that act to pre-populate web page form elements and communicate the context.
Examples	`https://example.com/new?title=New+issue&body=This+comment+is+about+CAN12345`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/feedbackURL

Event Agent Role

Identifier: http://rs.tdwg.org/dwc-dp/1.0/event-agent-role

Description: A role filled by a dcterms:Agent with respect to a dwc:Event.

dcterms:isVersionOf: http://example.com/term-pending//event-agent-role

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
event_fk	role for	event	event_pk	foreign key	Yes	Yes
agent_fk	role holder	agent	agent_pk	foreign key	Yes	Yes

event_fk
Title (Label)	Event (Foreign Key)
Namespace	dwc
Table	Event Agent Role
Description	An identifier for a dwc:Event.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/eventID

agent_fk
Title (Label)	Agent (Foreign Key)
Namespace	dwc
Table	Event Agent Role
Description	An identifier for a dcterms:Agent.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

agentRole
Title (Label)	Agent Role
Namespace	dwc
Table	Event Agent Role
Description	A category that best matches the nature of a role of a dcterms:Agent.
Notes	Recommended best practice is to use a controlled vocabulary for the roles appropriate to the class of resource a dcterms:AgentRole is related to.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResource

agentRoleIRI
Title (Label)	Agent Role IRI
Namespace	dwciri
Table	Event Agent Role
Description	An IRI of the controlled vocabulary value for a role of a dcterms:Agent.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResourceID

agentRoleSource
Title (Label)	Agent Role Source
Namespace	dc
Table	Event Agent Role
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:agentRole is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

agentRoleOrder
Title (Label)	Agent Role Order
Namespace	dwc
Table	Event Agent Role
Description	A numerical position of an AgentRole in a set of AgentRoles that have the same combination of agentRole, agentRoleIRI, agentRoleSource and related target identifier.
Notes	One could use dwc:agentRoleOrder to create an ordered list of collectors (dwc:agentRole = 'collector') for a dwc:MaterialEntity, for example. The first would have dwc:agentRoleOrder=1, the second would have dwc:agentRoleOrder=2.
Type	integer
Constraints	{"required": true, "minimum": 1}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentRoleOrder

agentRoleDate
Title (Label)	Agent Role Date
Namespace	dwc
Table	Event Agent Role
Description	An interval during which a dcterms:AgentRole was in effect.
Notes	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionEffectiveDate

Event Assertion

Identifier: http://rs.tdwg.org/dwc-dp/1.0/event-assertion

Description: A dwc:Assertion made by a dcterms:Agent about a dwc:Event.

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/MeasurementOrFact

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
assertionID				weak primary key	No	No
event_fk	about	event	event_pk	foreign key	Yes	Yes
assertionBy_fk	asserted by	agent	agent_pk	foreign key	Yes	No
assertionByID	asserted by	agent	agentID	weak foreign key	No	No
assertionProtocol_fk	followed	protocol	protocol_pk	foreign key	Yes	No

assertionID
Title (Label)	Assertion ID
Namespace	dwc
Table	Event Assertion
Description	An identifier for a dwc:Assertion.
Notes	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": true}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionID

event_fk
Title (Label)	Event (Foreign Key)
Namespace	dwc
Table	Event Assertion
Description	An identifier for a dwc:Event.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/eventID

verbatimAssertionType
Title (Label)	Verbatim Assertion Type
Namespace	dwc
Table	Event Assertion
Description	A string representing the type of dwc:Assertion as it appeared in the original record.
Notes	This term is meant to allow the capture of an unaltered original name for a dwc:assertionType. This term is meant to be used in addition to dwc:assertionType, not instead of it.
Examples	`water_temp` `Fish biomass` `sampling net mesh size`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/verbatimAssertionType

assertionType
Title (Label)	Assertion Type
Namespace	dwc
Table	Event Assertion
Description	A category that best matches the nature of a dwc:Assertion.
Notes	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`tail length` `temperature` `trap line length` `survey area` `trap type`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionType

assertionTypeIRI
Title (Label)	Assertion Type IRI
Namespace	dwciri
Table	Event Assertion
Description	An IRI of a controlled vocabulary value for a type of dwc:Assertion.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/iri/measurementType

assertionTypeSource
Title (Label)	Assertion Type Source
Namespace	dc
Table	Event Assertion
Description	A reference to the controlled vocabulary in which the definition of a value in dwc:assertionType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionMadeDate
Title (Label)	Assertion Made Date
Namespace	dwc
Table	Event Assertion
Description	A date on which a dwc:Assertion was created.
Notes	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionMadeDate

assertionEffectiveDate
Title (Label)	Assertion Effective Date
Namespace	dwc
Table	Event Assertion
Description	A date-time or time interval during which an asserted state or measurement was deemed to be in effect.
Notes	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionEffectiveDate

assertionValue
Title (Label)	Assertion Value
Namespace	dwc
Table	Event Assertion
Description	An asserted value.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionValue

assertionValueIRI
Title (Label)	Assertion Value IRI
Namespace	dwciri
Table	Event Assertion
Description	An IRI of the controlled vocabulary value for a value of a dwc:Assertion.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/iri/measurementValue

assertionValueSource
Title (Label)	Assertion Value Source
Namespace	dc
Table	Event Assertion
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:assertionValue is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionUnit
Title (Label)	Assertion Unit
Namespace	dwc
Table	Event Assertion
Description	Unit associated with the value in dwc:assertionValue.
Notes	Recommended best practice is to use a controlled vocabulary such as the Ontology of Units of Measure http://www.wurvoc.org/vocabularies/om-1.8/ of SI units, derived units, or other non-SI units accepted for use within the SI. For units that are composed of multiple parts, use the patterns as given in "A Primer for Communicating Mathematics via Plain Text" (https://cse.sc.edu/~fenner/latex-ASCII.pdf) by Stephen Fenner (e.g., `g/cm^3` for grams per cubic centimeter). For other units, provide the value as a recognizable standard (e.g., '%') or written out in full and in the plural (e.g., `individuals`). It is fine to provide non-SI units in the original language of the dataset.
Examples	`m` `s` `g` `ml`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionUnit

assertionUnitIRI
Title (Label)	Assertion Unit IRI
Namespace	dwciri
Table	Event Assertion
Description	An IRI of a controlled vocabulary value for the unit of a dwc:assertionValue.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/iri/assertionUnit

assertionUnitSource
Title (Label)	Assertion Unit Source
Namespace	dc
Table	Event Assertion
Description	A reference to a controlled vocabulary in which the definition of the value in dwc:assertionUnit is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionError
Title (Label)	Assertion Error
Namespace	dwc
Table	Event Assertion
Description	A description of the potential error associated with a dwc:assertionValue.
Examples	`0.01` `normal distribution with variation of 2 m`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionError

assertionBy
Title (Label)	Assertion By
Namespace	dwc
Table	Event Assertion
Description	A list (concatenated and separated) of names of dcterms:Agents responsible for making a dwc:Assertion.
Notes	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionBy

assertionBy_fk
Title (Label)	Assertion By (Foreign Key)
Namespace	dwc
Table	Event Assertion
Description	An identifier for a dcterms:Agent responsible for making a dwc:Assertion.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

assertionByID
Title (Label)	Assertion By ID
Namespace	dwc
Table	Event Assertion
Description	An identifier for a dcterms:Agent responsible for making a dwc:Assertion.
Notes	The value in this field MAY refer to a dcterms:Agent within or external to the dataset in which this record originated.
Examples	`https://orcid.org/0000-0002-1825-0097`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

assertionProtocols
Title (Label)	Assertion Protocols
Namespace	dwc
Table	Event Assertion
Description	Names of, references to, or descriptions of dwc:Protocols used in making a dwc:Assertion.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionProtocols

assertionProtocol_fk
Title (Label)	Assertion Protocol (Foreign Key)
Namespace	dwc
Table	Event Assertion
Description	An identifier for a dwc:Protocol used to make a dwc:Assertion.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/protocolID

assertionReferences
Title (Label)	Assertion References
Namespace	dwc
Table	Event Assertion
Description	A list (concatenated and separated) of dcterms:BibliographicResources associated with a dwc:Assertion.
Notes	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionReferences

assertionRemarks
Title (Label)	Assertion Remarks
Namespace	dwc
Table	Event Assertion
Description	Comments or notes about a dwc:Assertion.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionRemarks

Event Identifier

Identifier: http://rs.tdwg.org/dwc-dp/1.0/event-identifier

Description: An adms:Identifier for a dwc:Event.

Notes: An important point to note is that properties of the adms:Identifier class are properties of the Identifier, not the resource that it identifies or the agency that issued it.

dcterms:isVersionOf: http://www.w3.org/ns/adms#Identifier

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
event_fk	for	event	event_pk	foreign key	Yes	Yes

event_fk
Title (Label)	Event (Foreign Key)
Namespace	dwc
Table	Event Identifier
Description	An identifier for a dwc:Event.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/eventID

identifier
Title (Label)	Identifier
Namespace	skos
Table	Event Identifier
Description	An unambiguous reference to a resource within a given context.
Notes	Recommended best practice is to identify a resource by means of a string conforming to a formal identification system.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://www.w3.org/2004/02/skos/core#notation

identifierType
Title (Label)	Identifier Type
Namespace	dc
Table	Event Identifier
Description	A category or system that best matches the nature of an identifier (skos:notation).
Notes	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/type

identifierTypeIRI
Title (Label)	Identifier Type IRI
Namespace	dcterms
Table	Event Identifier
Description	An IRI of a controlled vocabulary value for a type of identifier.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/type

identifierTypeSource
Title (Label)	Identifier Type Source
Namespace	dc
Table	Event Identifier
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:identifierType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

identifierLanguage
Title (Label)	Identifier Language
Namespace	dc
Table	Event Identifier
Description	A language in which an identifier is presented.
Notes	Recommended best practice is to use an ISO639-2 three-letter language code.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/language

Event Media

Identifier: http://rs.tdwg.org/dwc-dp/1.0/event-media

Description: A dwc:Event as content in an ac:Media entity.

dcterms:isVersionOf: http://example.com/term-pending//event-media

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
media_fk	this media instance	media	media_pk	foreign key	Yes	Yes
event_fk	about	event	event_pk	foreign key	Yes	Yes

media_fk
Title (Label)	Media (Foreign Key)
Namespace	dcterms
Table	Event Media
Description	An identifier for an ac:Media resource.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://purl.org/dc/terms/identifier

event_fk
Title (Label)	Event (Foreign Key)
Namespace	dwc
Table	Event Media
Description	An identifier for a dwc:Event.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/eventID

subjectCategory
Title (Label)	Subject Category
Namespace	ac
Table	Event Media
Description	A term to describe the content of a image or a region of interest within an image using a controlled value string.
Notes	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/CVtermLiteral

subjectCategoryIRI
Title (Label)	Subject Category IRI
Namespace	Iptc4xmpExt
Table	Event Media
Description	An IRI of a controlled vocabulary value for the subject category of an ac:Media resource.
Notes	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://iptc.org/std/Iptc4xmpExt/2008-02-29/CVterm

subjectCategoryVocabulary
Title (Label)	Subject Category Source
Namespace	ac
Table	Event Media
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:subjectCategory is given.
Notes	The Audiovisual Core recommended vocabularies do not need to be cited here. There is no required linkage between individual Subject Category terms and the vocabulary; the mechanism is intended to support discovery of the normative URI for a term, but not guarantee it.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectCategoryVocabulary

subjectPartLiteral
Title (Label)	Subject Part Literal
Namespace	ac
Table	Event Media
Description	The portion or product of organism morphology, behaviour, environment, etc. that is either predominantly shown or particularly well exemplified by the ac:Media resource, denoted by a controlled value string.
Notes	Values SHOULD be selected from the Controlled Vocabulary for ac:subjectPart. It is best practice to use ac:subjectPart instead of ac:subjectPartLiteral whenever practical.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectPartLiteral

subjectPart
Title (Label)	Subject Part
Namespace	ac
Table	Event Media
Description	The portion or product of organism morphology, behaviour, environment, etc. that is either predominantly shown or particularly well exemplified by the ac:Media resource, denoted by an IRI.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectPart

subjectOrientationLiteral
Title (Label)	Subject Orientation Literal
Namespace	ac
Table	Event Media
Description	Specific orientation (= direction, view angle) of the subject represented in the ac:Media resource with respect to the acquisition device, denoted by a controlled value string.
Notes	Values SHOULD be selected from the Controlled Vocabulary for ac:subjectOrientation. It is best practice to use ac:subjectOrientation instead of ac:subjectOrientationLiteral whenever practical.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectOrientationLiteral

subjectOrientation
Title (Label)	Subject Orientation
Namespace	ac
Table	Event Media
Description	Specific orientation (= direction, view angle) of the subject represented in the ac:Media resource with respect to the acquisition device.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectOrientation

physicalSetting
Title (Label)	Physical Setting
Namespace	ac
Table	Event Media
Description	The setting of the content represented in an ac:Media resource, such as images, sounds, and movies if the provider deems them relevant.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/physicalSetting

Event Protocol

Identifier: http://rs.tdwg.org/dwc-dp/1.0/event-protocol

Description: A dwc:Protocol used for a dwc:Event.

dcterms:isVersionOf: http://example.com/term-pending//event-protocol

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
protocol_fk	followed	protocol	protocol_pk	foreign key	Yes	Yes
event_fk	used during	event	event_pk	foreign key	Yes	Yes

protocol_fk
Title (Label)	Protocol (Foreign Key)
Namespace	dwc
Table	Event Protocol
Description	An identifier for a dwc:Protocol.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/protocolID

event_fk
Title (Label)	Event (Foreign Key)
Namespace	dwc
Table	Event Protocol
Description	An identifier for a dwc:Event.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/eventID

Event Provenance

Identifier: http://rs.tdwg.org/dwc-dp/1.0/event-provenance

Description: A dwc:Provenance for a dwc:Event.

dcterms:isVersionOf: http://example.com/term-pending//event-provenance

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
provenance_fk	has	provenance	provenance_pk	foreign key	Yes	Yes
event_fk	for	event	event_pk	foreign key	Yes	Yes

provenance_fk
Title (Label)	Provenance (Foreign Key)
Namespace	dcterms
Table	Event Provenance
Description	An identifier for a dwc:Provenance.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/provenanceID

event_fk
Title (Label)	Event (Foreign Key)
Namespace	dwc
Table	Event Provenance
Description	An identifier for a dwc:Event.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/eventID

Event Reference

Identifier: http://rs.tdwg.org/dwc-dp/1.0/event-reference

Description: A dcterms:BibliographicResource related to a dwc:Event.

dcterms:isVersionOf: http://example.com/term-pending//event-reference

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
reference_fk	mentioned in	bibliographic-resource	reference_pk	foreign key	Yes	No
event_fk	mentioned	event	event_pk	foreign key	Yes	Yes

reference_fk
Title (Label)	Reference (Foreign Key)
Namespace	dwc
Table	Event Reference
Description	An identifier for a dcterms:BibliographicResource.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/referenceID

event_fk
Title (Label)	Event (Foreign Key)
Namespace	dwc
Table	Event Reference
Description	An identifier for a dwc:Event.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/eventID

relationshipType
Title (Label)	Relationship Type
Namespace	dwc
Table	Event Reference
Description	A relationship of a subject resource to a dcterms:BibliographicResource.
Notes	Recommended best practice is to use a controlled vocabulary.
Examples	`cited in` `referenced`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResource

Event Usage Policy

Identifier: http://rs.tdwg.org/dwc-dp/1.0/event-usage-policy

Description: Rights, usage, and attribution statements applicable to a dwc:MaterialEntity.

dcterms:isVersionOf: http://example.com/term-pending//event-usage-policy

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
event_fk	for	event	event_pk	foreign key	Yes	Yes
usagePolicy_fk	has	usage-policy	usagePolicy_pk	foreign key	Yes	No

event_fk
Title (Label)	Event (Foreign Key)
Namespace	dwc
Table	Event Usage Policy
Description	An identifier for a dwc:Event.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/eventID

usagePolicy_fk
Title (Label)	Usage Policy (Foreign Key)
Namespace	dcterms
Table	Event Usage Policy
Description	An identifier for a dwc:UsagePolicy.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/usagePolicyID

Geological Context

Identifier: http://rs.tdwg.org/dwc-dp/1.0/geological-context

Description: A set of geological designations, such as stratigraphy, that qualify a dcterms:Location or source of a dwc:MaterialEntity.

Examples:

`a particular lithostratigraphic layer`

`a specific chronostratigraphic unit`

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/GeologicalContext

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
geologicalContext_pk				primary key	Yes	Yes
geologicalContextID				weak primary key	No	No

geologicalContext_pk
Title (Label)	Geological Context (Primary Key)
Namespace	dwc
Table	Geological Context
Description	A unique identifier for a dwc:GeologicalContext.
Notes	The value in this field MAY be changed in aggregation to guarantee uniqueness.
Examples	`https://opencontext.org/subjects/e54377f7-4452-4315-b676-40679b10c4d9`
Type	string
Constraints	{"required": true, "unique": true}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/geologicalContextID

geologicalContextID
Title (Label)	Geological Context ID
Namespace	dwc
Table	Geological Context
Description	An identifier for a dwc:GeologicalContext.
Notes	The value in this field MUST be preserved in aggregation. Recommended best practice is to use a globally unique identifier.
Examples	`https://opencontext.org/subjects/e54377f7-4452-4315-b676-40679b10c4d9`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/geologicalContextID

earliestEonOrLowestEonothem
Title (Label)	Earliest Eon Or Lowest Eonothem
Namespace	dwc
Table	Geological Context
Description	The full name of the earliest possible geochronologic eon or lowest chronostratigraphic eonothem or the informal name attributable to the stratigraphic horizon from which the dwc:MaterialEntity was collected.
Examples	`Phanerozoic` `Proterozoic`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/earliestEonOrLowestEonothem

latestEonOrHighestEonothem
Title (Label)	Latest Eon Or Highest Eonothem
Namespace	dwc
Table	Geological Context
Description	The full name of the latest possible geochronologic eon or highest chronostratigraphic eonothem or the informal name attributable to the stratigraphic horizon from which the dwc:MaterialEntity was collected.
Examples	`Phanerozoic` `Proterozoic`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/latestEonOrHighestEonothem

earliestEraOrLowestErathem
Title (Label)	Earliest Era Or Lowest Erathem
Namespace	dwc
Table	Geological Context
Description	The full name of the earliest possible geochronologic era or lowest chronostratigraphic erathem attributable to the stratigraphic horizon from which the dwc:MaterialEntity was collected.
Examples	`Cenozoic` `Mesozoic`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/earliestEraOrLowestErathem

latestEraOrHighestErathem
Title (Label)	Latest Era Or Highest Erathem
Namespace	dwc
Table	Geological Context
Description	The full name of the latest possible geochronologic era or highest chronostratigraphic erathem attributable to the stratigraphic horizon from which the dwc:MaterialEntity was collected.
Examples	`Cenozoic` `Mesozoic`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/latestEraOrHighestErathem

earliestPeriodOrLowestSystem
Title (Label)	Earliest Period Or Lowest System
Namespace	dwc
Table	Geological Context
Description	The full name of the earliest possible geochronologic period or lowest chronostratigraphic system attributable to the stratigraphic horizon from which the dwc:MaterialEntity was collected.
Examples	`Neogene` `Tertiary` `Quaternary`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/earliestPeriodOrLowestSystem

latestPeriodOrHighestSystem
Title (Label)	Latest Period Or Highest System
Namespace	dwc
Table	Geological Context
Description	The full name of the latest possible geochronologic period or highest chronostratigraphic system attributable to the stratigraphic horizon from which the dwc:MaterialEntity was collected.
Examples	`Neogene` `Tertiary` `Quaternary`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/latestPeriodOrHighestSystem

earliestEpochOrLowestSeries
Title (Label)	Earliest Epoch Or Lowest Series
Namespace	dwc
Table	Geological Context
Description	The full name of the earliest possible geochronologic epoch or lowest chronostratigraphic series attributable to the stratigraphic horizon from which the dwc:MaterialEntity was collected.
Examples	`Holocene` `Pleistocene` `Ibexian Series`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/earliestEpochOrLowestSeries

latestEpochOrHighestSeries
Title (Label)	Latest Epoch Or Highest Series
Namespace	dwc
Table	Geological Context
Description	The full name of the latest possible geochronologic epoch or highest chronostratigraphic series attributable to the stratigraphic horizon from which the dwc:MaterialEntity was collected.
Examples	`Holocene` `Pleistocene` `Ibexian Series`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/latestEpochOrHighestSeries

earliestAgeOrLowestStage
Title (Label)	Earliest Age Or Lowest Stage
Namespace	dwc
Table	Geological Context
Description	The full name of the earliest possible geochronologic age or lowest chronostratigraphic stage attributable to the stratigraphic horizon from which the dwc:MaterialEntity was collected.
Examples	`Atlantic` `Boreal` `Skullrockian`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/earliestAgeOrLowestStage

latestAgeOrHighestStage
Title (Label)	Latest Age Or Highest Stage
Namespace	dwc
Table	Geological Context
Description	The full name of the latest possible geochronologic age or highest chronostratigraphic stage attributable to the stratigraphic horizon from which the dwc:MaterialEntity was collected.
Examples	`Atlantic` `Boreal` `Skullrockian`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/latestAgeOrHighestStage

lowestBiostratigraphicZone
Title (Label)	Lowest Biostratigraphic Zone
Namespace	dwc
Table	Geological Context
Description	The full name of the lowest possible geological biostratigraphic zone of the stratigraphic horizon from which the dwc:MaterialEntity was collected.
Examples	`Maastrichtian`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/lowestBiostratigraphicZone

highestBiostratigraphicZone
Title (Label)	Highest Biostratigraphic Zone
Namespace	dwc
Table	Geological Context
Description	The full name of the highest possible geological biostratigraphic zone of the stratigraphic horizon from which the dwc:MaterialEntity was collected.
Examples	`Blancan`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/highestBiostratigraphicZone

lithostratigraphicTerms
Title (Label)	Lithostratigraphic Terms
Namespace	dwc
Table	Geological Context
Description	The combination of all lithostratigraphic names for the rock from which the dwc:MaterialEntity was collected.
Examples	`Pleistocene-Weichselien`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/lithostratigraphicTerms

group
Title (Label)	Group
Namespace	dwc
Table	Geological Context
Description	The full name of the lithostratigraphic group from which the dwc:MaterialEntity was collected.
Examples	`Bathurst` `Lower Wealden`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/group

formation
Title (Label)	Formation
Namespace	dwc
Table	Geological Context
Description	The full name of the lithostratigraphic formation from which the dwc:MaterialEntity was collected.
Examples	`Notch Peak Formation` `House Limestone` `Fillmore Formation`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/formation

member
Title (Label)	Member
Namespace	dwc
Table	Geological Context
Description	The full name of the lithostratigraphic member from which the dwc:MaterialEntity was collected.
Examples	`Lava Dam Member` `Hellnmaria Member`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/member

bed
Title (Label)	Bed
Namespace	dwc
Table	Geological Context
Description	The full name of the lithostratigraphic bed from which the dwc:MaterialEntity was collected.
Examples	`Harlem coal`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/bed

geologicEvent
Title (Label)	Geologic Event
Namespace	dwc
Table	Geological Context
Description	A name of an identifiable event during which one or more geologic processes acted to create or modify one or more dwc:GeologicalMaterials.
Notes	This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`Sevier orogeny` `Alleghanian orogeny` `Alpine orogeny` `Variscan orogeny` `Vredefort impact`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/geologicEvent

geologicProvince
Title (Label)	Geologic Province
Namespace	dwc
Table	Geological Context
Description	An extensive named region with similar geologic history, structural, petrographic, or physiographic features throughout in which the GeologicalContext was located.
Notes	This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`Northwest Province` `Surprise Paleovalley` `Basin and Range` `Coastal Plain` `Piedmont` `Blue Ridge`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/geologicProvince

lithodemicUnit
Title (Label)	Lithodemic Unit
Namespace	dwc
Table	Geological Context
Description	A geologic unit that lacks stratification, is primarily comprised of intrusive, deformed, and/or metamorphosed rock, and is characterized by irregularly mixed lithology or highly complicated structural relations.
Notes	Due to the unstructured nature of complexes, both named units and lithological descriptive terms are acceptable values.
Examples	`Catalina Core Complex` `injection complex` `New England Plutonic Suite` `Sierra Nevada batholith`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/lithodemicUnit

tectonicUnits
Title (Label)	Tectonic Units
Namespace	dwc
Table	Geological Context
Description	The combination of all tectonic unit names for the rock from which a dwc:MaterialEntity was collected.
Notes	Recommended best practice is to use an authoritative tectonic unit lexicon such as the Tectonic Map of Switzerland (TK500). This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`Upper Helvetic` `Wildhorn Nappe Complex` `Sublage Nappe`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/tectonicUnits

Geological Context Media

Identifier: http://rs.tdwg.org/dwc-dp/1.0/geological-context-media

Description: A dwc:GeologicalContext as content in an ac:Media entity.

dcterms:isVersionOf: http://example.com/term-pending//geological-context-media

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
media_fk	this media instance	media	media_pk	foreign key	Yes	Yes
geologicalContext_fk	about	geological-context	geologicalContext_pk	foreign key	Yes	Yes

media_fk
Title (Label)	Media (Foreign Key)
Namespace	dcterms
Table	Geological Context Media
Description	An identifier for an ac:Media resource.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://purl.org/dc/terms/identifier

geologicalContext_fk
Title (Label)	Geological Context (Foreign Key)
Namespace	dwc
Table	Geological Context Media
Description	An identifier for a dwc:GeologicalContext.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/geologicalContextID

subjectCategory
Title (Label)	Subject Category
Namespace	ac
Table	Geological Context Media
Description	A term to describe the content of a image or a region of interest within an image using a controlled value string.
Notes	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/CVtermLiteral

subjectCategoryIRI
Title (Label)	Subject Category IRI
Namespace	Iptc4xmpExt
Table	Geological Context Media
Description	An IRI of a controlled vocabulary value for the subject category of an ac:Media resource.
Notes	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://iptc.org/std/Iptc4xmpExt/2008-02-29/CVterm

subjectCategoryVocabulary
Title (Label)	Subject Category Source
Namespace	ac
Table	Geological Context Media
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:subjectCategory is given.
Notes	The Audiovisual Core recommended vocabularies do not need to be cited here. There is no required linkage between individual Subject Category terms and the vocabulary; the mechanism is intended to support discovery of the normative URI for a term, but not guarantee it.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectCategoryVocabulary

subjectPartLiteral
Title (Label)	Subject Part Literal
Namespace	ac
Table	Geological Context Media
Description	The portion or product of organism morphology, behaviour, environment, etc. that is either predominantly shown or particularly well exemplified by the ac:Media resource, denoted by a controlled value string.
Notes	Values SHOULD be selected from the Controlled Vocabulary for ac:subjectPart. It is best practice to use ac:subjectPart instead of ac:subjectPartLiteral whenever practical.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectPartLiteral

subjectPart
Title (Label)	Subject Part
Namespace	ac
Table	Geological Context Media
Description	The portion or product of organism morphology, behaviour, environment, etc. that is either predominantly shown or particularly well exemplified by the ac:Media resource, denoted by an IRI.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectPart

subjectOrientationLiteral
Title (Label)	Subject Orientation Literal
Namespace	ac
Table	Geological Context Media
Description	Specific orientation (= direction, view angle) of the subject represented in the ac:Media resource with respect to the acquisition device, denoted by a controlled value string.
Notes	Values SHOULD be selected from the Controlled Vocabulary for ac:subjectOrientation. It is best practice to use ac:subjectOrientation instead of ac:subjectOrientationLiteral whenever practical.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectOrientationLiteral

subjectOrientation
Title (Label)	Subject Orientation
Namespace	ac
Table	Geological Context Media
Description	Specific orientation (= direction, view angle) of the subject represented in the ac:Media resource with respect to the acquisition device.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectOrientation

physicalSetting
Title (Label)	Physical Setting
Namespace	ac
Table	Geological Context Media
Description	The setting of the content represented in an ac:Media resource, such as images, sounds, and movies if the provider deems them relevant.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/physicalSetting

Geological Material

Identifier: http://rs.tdwg.org/dwc-dp/1.0/geological-material

Description: A dwc:MaterialEntity that is geological in nature.

Examples:

`a specific mineral`

`a specific rock`

`a specific ore`

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/GeologicalMaterial

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
materialEntity_fk	is a	material	materialEntity_pk	foreign key	Yes	Yes
materialEntityID				weak primary key	No	No
mineralogicalAnalysisProtocol_fk	followed	protocol	protocol_pk	foreign key	Yes	Yes

materialEntity_fk
Title (Label)	Material Entity (Foreign Key)
Namespace	dwc
Table	Geological Material
Description	A unique identifier for a dwc:MaterialEntity.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": true}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/materialEntityID

materialEntityID
Title (Label)	Material Entity ID
Namespace	dwc
Table	Geological Material
Description	An identifier for a dwc:MaterialEntity.
Notes	The value in this field MUST be preserved in aggregation. Recommended best practice is to use a globally unique identifier.
Examples	`06809dc5-f143-459a-be1a-6f03e63fc083`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/materialEntityID

geologicalMaterialNames
Title (Label)	Geological Material Names
Namespace	dwc
Table	Geological Material
Description	A list (concatenated and separated) of mineral or lithotaxon names for a dwc:GeologicalMaterial.
Notes	May includes both informal (e.g., variety, synonym) and formal (classification) names. The first name in the list should be considered the preferred name. Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Examples	`quartz \| smoky quartz` `muscovite` `garnet group`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/geologicalMaterialNames

geologicMaterialNameID
Title (Label)	Geologic Material Name ID
Namespace	dwc
Table	Geological Material
Description	An identifier for a mineral or lithotaxon name for a dwc:GeologicalMaterial. May be a global unique identifier or an identifier specific to the data set.
Notes	Recommended best practice is to use a persistent, globally unique identifier.
Examples	`https://geospecimens.org/api/v1/catalog/resource/mineral-name/ba673bdf-7228-11f0-a057-52f8e1bb0628`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/geologicMaterialNameID

geologicalMaterialNameTypes
Title (Label)	Geological Material Name Types
Namespace	dwc
Table	Geological Material
Description	A list (concatenated and separated) of the types of names provided in dwc:geologicalMaterialNames.
Notes	If this term is populated, it should have an equal number of items in the list as for the list in dwc:geologicalMaterialNames and the types should have the same order as the names to which they refer. Recommended best practice is to use a controlled vocabulary for the values in a list (e.g., https://kos.geospecimens.org/def/geological-specimen-name-type). See Gavryliv (2023), https://doi.org/10.1180/mgm.2023.23, for a detailed breakdown of informal, alternate names.
Examples	`species \| variety` `species` `group` `synonym` `classification` `historical`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/geologicalMaterialNameTypes

classificationCodes
Title (Label)	Classification Codes
Namespace	dwc
Table	Geological Material
Description	A list (concatenated and separated) of codes that each identifies a name from a classification system applied to a dwc:GeologicalMaterial.
Notes	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Examples	`71.02.02a.01` ("muscovite" in the Dana classification system) `9.AD.25` ("garnet group" in the Nickel-Strunz classification system) `75.01.03.01 \| 4.DA.05` ("quartz" the Dana classification system and "quartz group" in the Nickel-Strunz classification system)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/classificationCodes

mineralSequence
Title (Label)	Mineral Sequence
Namespace	dwc
Table	Geological Material
Description	A list (concatenated and separated) of minerals in a dwc:GeologicalMaterial, ordered in a manner that illustrates the relative timing of mineral formation.
Notes	The list should only contain minerals that belong to a readily identifiable sequence of formation. Therefore, a list may contain a subset of the minerals in a specimen. Minerals that formed in-situ with one another are separated by a plus. Minerals that formed in the sequence are separated by a greater than (' > ') symbol.
Examples	`Sphalerite > Quartz > Pyrite` `Calcite > Quartz > Sphalerite > Pyrite`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/mineralSequence

measuredChemistry
Title (Label)	Measured Chemistry
Namespace	dwc
Table	Geological Material
Description	A concise expression of the chemical composition of a mineral that shows the number of atoms of each element in a molecule, their spatial arrangement, and their linkage to each other.
Examples	`SiO2 (65.76)` `TiO2 (32.120)` `Al2O3 (2.21)` `(Mg0.77Fe0.23)2SiO4` `An6.4 Ab73.6 Or20`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/measuredChemistry

measuredChemistrySource
Title (Label)	Measured Chemistry Source
Namespace	dwc
Table	Geological Material
Description	A list (concatenated and separated) of resources associated with the reported measured chemistry described specifically enough to allow anyone in the future to use the same resources.
Notes	Recommended best practice is to use full bibliographic citations, global unique identifiers, or resolvable and persistent IRIs. See the broader concept http://rs.tdwg.org/dwc/terms/associatedReferences. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`Novak, G. A., & Gibbs, G. V. (1971). The crystal chemistry of the silicate garnets. American Mineralogist: Journal of Earth and Planetary Materials, 56(5-6), 791-825.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/measuredChemistrySource

mineralogicalAnalysisProtocol
Title (Label)	Mineralogical Analysis Protocol
Namespace	dwc
Table	Geological Material
Description	A technique used to determine the chemical composition or crystallography of a mineral.
Notes	Acronyms should be avoided even for widely recognized annotations. Recommended best practice is to use a controlled vocabulary such as https://vocabs.ardc.edu.au/viewById/650. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`Wet Chemistry` `X-ray fluorescence` `Electron probe microanalysis` `Scanning electron microscopy with energy-dispersive X-ray spectroscopy` `X-ray diffraction`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/mineralogicalAnalysisProtocol

mineralogicalAnalysisProtocol_fk
Title (Label)	Mineralogical Analysis Protocol (Foreign Key)
Namespace	dwc
Table	Geological Material
Description	An identifier for a dwc:Protocol used for a mineralogical analysis.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/protocolID

chemistryRemarks
Title (Label)	Chemistry Remarks
Namespace	dwc
Table	Geological Material
Description	General remarks about the chemical and isotopic composition of a dwc:GeologicalMaterial.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/chemistryRemarks

Identification

Identifier: http://rs.tdwg.org/dwc-dp/1.0/identification

Description: A classification of a resource according to a classification scheme.

Notes: For biology, the assignment of a scientific name or taxon concept to a dwc:Organism.

Examples:

`a subspecies determination of an organism`

`a nomenclatural act designating a specimen as a holotype`

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/Identification

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
identification_pk				primary key	Yes	Yes
identificationID				weak primary key	No	No
identificationProtocol_fk	followed	protocol	protocol_pk	foreign key	Yes	No
materialEntity_fk	of a	material	materialEntity_pk	foreign key	Yes	No
media_fk	based on	media	media_pk	foreign key	Yes	No
nucleotideAnalysis_fk	based on	nucleotide-analysis	nucleotideAnalysis_pk	foreign key	Yes	No
nucleotideSequence_fk	based on	nucleotide-sequence	nucleotideSequence_pk	foreign key	Yes	No
occurrence_fk	based on	occurrence	occurrence_pk	foreign key	Yes	No
organism_fk	of an	organism	organism_pk	foreign key	Yes	No
identifiedBy_fk	identified by	agent	agent_pk	foreign key	Yes	No
identifiedByID	identified by	agent	agentID	weak foreign key	No	No

identification_pk
Title (Label)	Identification (Primary Key)
Namespace	dwc
Table	Identification
Description	A unique identifier for a dwc:Identification.
Notes	The value in this field MAY be changed in aggregation to guarantee uniqueness.
Examples	`9992`
Type	string
Constraints	{"required": true, "unique": true}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identificationID

identificationID
Title (Label)	Identification ID
Namespace	dwc
Table	Identification
Description	An identifier for a dwc:Identification.
Notes	The value in this field MUST be preserved in aggregation. Recommended best practice is to use a globally unique identifier.
Examples	`9992`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identificationID

identificationType
Title (Label)	Identification Type
Namespace	dwc
Table	Identification
Description	A category that best matches the nature of a dwc:Identification.
Notes	The evidentiary basis, analytical approach, or inferential method by which an identification was determined. Values describe the dominant source of information supporting the identification (e.g., morphology, geography, molecular data, functional attributes, relationships, or taxonomic revision), independent of confidence level or taxonomic outcome.
Examples	`geography` `taxonomicRevision` `functionalAttributes` `nucleotideAnalysis` `karyotype` `media` `relationship` `features` `fine features` `unknown`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identificationType

identificationProtocol_fk
Title (Label)	Identification Protocol (Foreign Key)
Namespace	dwc
Table	Identification
Description	An identifier for a dwc:Protocol used for a dwc:Identification.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/protocolID

materialEntity_fk
Title (Label)	Material Entity (Foreign Key)
Namespace	dwc
Table	Identification
Description	An identifier for a dwc:MaterialEntity based on which a dwc:Identification was made.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/materialEntityID

media_fk
Title (Label)	Media (Foreign Key)
Namespace	dcterms
Table	Identification
Description	An identifier for an ac:Media resource based on which a dwc:Identification was made.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://purl.org/dc/terms/identifier

nucleotideAnalysis_fk
Title (Label)	Nucleotide Analysis (Foreign Key)
Namespace	dcterms
Table	Identification
Description	An identifier for a dwc:NucleotideAnalysis based on which a dwc:Identification was made.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://purl.org/dc/terms/identifier

nucleotideSequence_fk
Title (Label)	Nucleotide Sequence (Foreign Key)
Namespace	dcterms
Table	Identification
Description	An identifier for a dwc:NucleotideSequence based on which a dwc:Identification was made.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://purl.org/dc/terms/identifier

occurrence_fk
Title (Label)	Occurrence (Foreign Key)
Namespace	dwc
Table	Identification
Description	An identifier for a dwc:Occurrence based on which a dwc:Identification was made.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/occurrenceID

organism_fk
Title (Label)	Organism (Foreign Key)
Namespace	dwc
Table	Identification
Description	An identifier for a dwc:Organism based on which a dwc:Identification was made.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismID

verbatimIdentification
Title (Label)	Verbatim Identification
Namespace	dwc
Table	Identification
Description	A string representing the classification as it appeared in the original record.
Notes	This term is meant to allow the capture of an unaltered original identification/determination, including identification qualifiers, hybrid formulas, uncertainties, etc. This term is meant to be used in addition to dwc:geologicalMaterialNames or dwc:scientificName (and dwc:identificationQualifier etc.), not instead of it.
Examples	`Peromyscus sp.` `Ministrymon sp. nov. 1` `Anser anser × Branta canadensis` `Pachyporidae?` `Potentilla × pantotricha Soják` `Aconitum pilipes × A. variegatum` `Lepomis auritus x cyanellus`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/verbatimIdentification

isAcceptedIdentification
Title (Label)	Is Accepted Identification
Namespace	dwc
Table	Identification
Description	An indicator that a dwc:Identification of a dwc:Organism is a currently an accepted or preferred one.
Notes	Recommended best practice is to follow the TDWG Boolean Controlled Vocabulary http://rs.tdwg.org/tag/doc/boolean/.
Type	boolean
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/isAcceptedIdentification

taxonFormula
Title (Label)	Taxon Formula
Namespace	dwc
Table	Identification
Description	A string representing the pattern to use to construct a dwc:Identification from dwc:Taxon names and identification qualifiers.
Notes	Recommended best practice is to use a controlled vocabulary such as https://arctos.database.museum/info/ctDocumentation.cfm?table=cttaxa_formula.
Examples	`A` `not A` `A ?` `A or B` `A and B` `A x B` `A cf.` `A aff.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/taxonFormula

typeStatus
Title (Label)	Type Status
Namespace	dwc
Table	Identification
Description	A list (concatenated and separated) of nomenclatural types (type status, typified scientific name, publication) applied to the subject.
Notes	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `). This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`holotype`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/typeStatus

typeDesignationType
Title (Label)	typeDesignationType
Namespace	gbif
Table	Identification
Description	A category that best matches the nature of a type designation.
Notes	From https://rs.gbif.org/extension/gbif/1.0/typesandspecimen.xml.
Type	string
dcterms:isVersionOf	http://rs.gbif.org/terms/1.0/typeDesignationType

identifiedBy
Title (Label)	Identified By
Namespace	dwc
Table	Identification
Description	A name for a dcterms:Agent responsible for making a dwc:Identification.
Notes	When used in the context of an eco:Survey, the subject consists of all of the dwc:Identifications related to the eco:Survey. Recommended best practice is to separate the values in a list with space vertical bar space (`\|`). This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`James L. Patton` `Theodore Pappenfuss \| Robert Macey`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identifiedBy

identifiedBy_fk
Title (Label)	Identified By (Foreign Key)
Namespace	dwc
Table	Identification
Description	An identifier for a dcterms:Agent responsible for making a dwc:Identification.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identifiedByID

identifiedByID
Title (Label)	Identified By ID
Namespace	dwc
Table	Identification
Description	An identifier for a dcterms:Agent responsible for making a dwc:Identification.
Notes	The value in this field MAY refer to a dcterms:Agent within or external to the dataset in which this record originated.
Examples	`https://orcid.org/0000-0002-1825-0097` (for an individual) `https://orcid.org/0000-0002-1825-0097 \| https://orcid.org/0000-0002-1825-0098` (for a list of people)
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identifiedByID

dateIdentified
Title (Label)	Date Identified
Namespace	dwc
Table	Identification
Description	The date on which the dwc:Identification was made.
Notes	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/dateIdentified

identificationReferences
Title (Label)	Identification References
Namespace	dwc
Table	Identification
Description	A list (concatenated and separated) of dcterms:BibliographicResources used in a dwc:Identification.
Notes	When used in the context of an eco:Survey, the subject consists of all of the dwc:Identifications related to the eco:Survey. Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Examples	`Aves del Noroeste Patagonico. Christie et al. 2004.` `Stebbins, R. Field Guide to Western Reptiles and Amphibians. 3rd Edition. 2003. \| Irschick, D.J. and Shaffer, H.B. (1997). The polytypic species revisited: Morphological differentiation among tiger salamanders (Ambystoma tigrinum) (Amphibia: Caudata). Herpetologica, 53(1), 30-49.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identificationReferences

identificationVerificationStatus
Title (Label)	Identification Verification Status
Namespace	dwc
Table	Identification
Description	A categorical indicator of the extent to which a dwc:Identification has been verified to be correct.
Notes	Recommended best practice is to use a controlled vocabulary such as that used in HISPID and ABCD. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`0` (unverified in HISPID/ABCD).
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identificationVerificationStatus

identificationRemarks
Title (Label)	Identification Remarks
Namespace	dwc
Table	Identification
Description	Comments or notes about the dwc:Identification.
Examples	`Distinguished between Anthus correndera and Anthus hellmayri based on the comparative lengths of the uñas.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identificationRemarks

taxonID
Title (Label)	Taxon ID
Namespace	dwc
Table	Identification
Description	An identifier for a dwc:Taxon.
Examples	`8fa58e08-08de-4ac1-b69c-1235340b7001` `32567` `https://www.gbif.org/species/212`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/taxonID

scientificNameID
Title (Label)	Scientific Name ID
Namespace	dwc
Table	Identification
Description	An identifier for the nomenclatural (not taxonomic) details of a scientific name.
Examples	`urn:lsid:ipni.org:names:37829-1:1.3`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/scientificNameID

geologicalClassificationCodes
Title (Label)	Geological Classification Codes
Namespace	dwc
Table	Identification
Description	A list (concatenated and separated) of codes that each identifies a name from a classification system applied to a dwc:GeologicalMaterial.
Notes	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Examples	`71.02.02a.01` ("muscovite" in the Dana classification system) `9.AD.25` ("garnet group" in the Nickel-Strunz classification system) `75.01.03.01 \| 4.DA.05` ("quartz" the Dana classification system and "quartz group" in the Nickel-Strunz classification system)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/classificationCodes

geologicalMaterialNames
Title (Label)	Geological Material Names
Namespace	dwc
Table	Identification
Description	A list (concatenated and separated) of mineral or lithotaxon names for a dwc:GeologicalMaterial.
Notes	May includes both informal (e.g., variety, synonym) and formal (classification) names. The first name in the list should be considered the preferred name. Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Examples	`quartz \| smoky quartz` `muscovite` `garnet group`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/geologicalMaterialNames

scientificName
Title (Label)	Scientific Name
Namespace	dwc
Table	Identification
Description	A scientific name string, not including authorship, date or identification qualifiers.
Notes	When applied to an Organism or Occurrence, this term should be used to represent the scientific name that was applied to the associated Organism in accordance with the Taxon to which it was or is currently identified. Names should be compliant to the most recent nomenclatural code. For example, names of hybrids for algae, fungi and plants should follow the rules of the International Code of Nomenclature for algae, fungi, and plants (Shenzhen Code Articles H.1, H.2 and H.3). Thus, use the multiplication sign `×` (Unicode `U+00D7`, HTML `×`) to identify a hybrid, not `x` or `X`, if possible.
Examples	`Coleoptera` (order) `Vespertilionidae` (family) `Manis` (genus) `Ctenomys sociabilis` (genus + specificEpithet) `Ambystoma tigrinum diaboli` (genus + specificEpithet + infraspecificEpithet) `Quercus agrifolia var. oxyadenia` (genus + specificEpithet + taxonRank + infraspecificEpithet) `×Agropogon littoralis` `Mentha ×smithiana` `Agrostis stolonifera L. × Polypogon monspeliensis`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/scientificName

scientificNameAuthorship
Title (Label)	Scientific Name Authorship
Namespace	dwc
Table	Identification
Description	The authorship information for the dwc:scientificName formatted according to the conventions of the applicable dwc:nomenclaturalCode.
Examples	`(Torr.) J.T. Howell` `(Martinovský) Tzvelev` `(Györfi, 1952)`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/scientificNameAuthorship

vernacularName
Title (Label)	Vernacular Name
Namespace	dwc
Table	Identification
Description	A common or vernacular name.
Examples	`cóndor andino` `death cap` `rainbow trout` `Gänsegeier` `smoky quartz`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/vernacularName

taxonRank
Title (Label)	Taxon Rank
Namespace	dwc
Table	Identification
Description	The taxonomic rank of the most specific name in the dwc:scientificName.
Notes	Recommended best practice is to use a controlled vocabulary. The taxon ranks of algae, fungi and plants are defined in the International Code of Nomenclature for algae, fungi, and plants (Shenzhen Code Articles H3.2, H4.4 and H.3.1).
Examples	`subspecies` `varietas` `forma` `species` `genus` `nothogenus` `nothospecies` `nothosubspecies`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/taxonRank

classificationSystem
Title (Label)	Classification System
Namespace	dc
Table	Identification
Description	A reference to the classification system in which an authoritative name or formal classification belongs.
Notes	Recommended best practice is to provide a formal citation or IRI. This term should not be confused with dwc:namePublishedIn as a classification system is not equivalent to a publication in which a taxon is first described. This term should not be confused with dwc:nameAccordingTo as a classification system is not equivalent to a publication or other source in which a specific taxon concept circumscription is defined or implied. This term should not be confused with dwc:nomenclaturalCode as a classification system is not equivalent to code of nomenclature, which states the rules for naming rather than an organized source of names. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`Strunz, H., Nickel, E.H. (2001): Strunz Mineralogical Tables. Chemical-Structural Mineral Classification System. 9th edition. E. Schweizerbart’sche Verlagsbuchhandlung, Stuttgart, ix + 870 p. (ISBN 3-510-65188-X)` `Gaines, R.V., Skinner, H.C.W., Foord, E.E., Mason, B., Rosenzweig, A. (1997): Dana's New Mineralogy: The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana. 8th edition. John Wiley & Sons, New York, xlv + 1819 p. (ISBN 0-471-19310-0).` `https://kos.geospecimens.org/vocab/meteorite-classification` `Mammal Diversity Database. (2026). Mammal Diversity Database (Version 2.5) [Data set]. [Zenodo](https://zenodo.org/records/10595931). https://doi.org/10.5281/zenodo.17033774` `Index Fungorum. (2026). Index Fungorum electronic database. Royal Botanic Gardens, Kew. Retrieved August 17, 2026, from indexfungorum.org.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/classificationSystem

kingdom
Title (Label)	Kingdom
Namespace	dwc
Table	Identification
Description	The full scientific name of the kingdom in which the dwc:Taxon is classified.
Examples	`Animalia` `Archaea` `Bacteria` `Chromista` `Fungi` `Plantae` `Protozoa` `Viruses`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/kingdom

phylum
Title (Label)	Phylum
Namespace	dwc
Table	Identification
Description	The full scientific name of the phylum or division in which the dwc:Taxon is classified.
Examples	`Chordata` (phylum) `Bryophyta` (division)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/phylum

class
Title (Label)	Class
Namespace	dwc
Table	Identification
Description	The full scientific name of the class in which the dwc:Taxon is classified.
Examples	`Mammalia` `Hepaticopsida`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/class

order
Title (Label)	Order
Namespace	dwc
Table	Identification
Description	The full scientific name of the order in which the dwc:Taxon is classified.
Examples	`Carnivora` `Monocleales`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/order

superfamily
Title (Label)	Superfamily
Namespace	dwc
Table	Identification
Description	The full scientific name of the superfamily in which the dwc:Taxon is classified.
Notes	A taxonomic category subordinate to an order and superior to a family. According to ICZN article 29.2, the suffix -oidea is used for a superfamily name.
Examples	`Achatinoidea` `Cerithioidea` `Helicoidea` `Hypsibioidea` `Valvatoidea` `Zonitoidea`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/superfamily

family
Title (Label)	Family
Namespace	dwc
Table	Identification
Description	The full scientific name of the family in which the dwc:Taxon is classified.
Examples	`Felidae` `Monocleaceae`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/family

subfamily
Title (Label)	Subfamily
Namespace	dwc
Table	Identification
Description	The full scientific name of the subfamily in which the dwc:Taxon is classified.
Examples	`Periptyctinae` `Orchidoideae` `Sphindociinae`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/subfamily

tribe
Title (Label)	Tribe
Namespace	dwc
Table	Identification
Description	The full scientific name of the tribe in which the dwc:Taxon is classified.
Examples	`Ortaliini` `Arethuseae`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/tribe

subtribe
Title (Label)	Subtribe
Namespace	dwc
Table	Identification
Description	The full scientific name of the subtribe in which the dwc:Taxon is classified.
Examples	`Plotinini` `Typhaeini`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/subtribe

genus
Title (Label)	Genus
Namespace	dwc
Table	Identification
Description	The full scientific name of the genus in which the dwc:Taxon is classified.
Examples	`Puma` `Monoclea`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/genus

genericName
Title (Label)	Generic Name
Namespace	dwc
Table	Identification
Description	The genus part of the dwc:scientificName without authorship.
Notes	For synonyms the accepted genus and the genus part of the name may be different. The term dwc:genericName should be used together with dwc:specificEpithet to form a binomial and with dwc:infraspecificEpithet to form a trinomial. The term dwc:genericName should only be used for combinations. Uninomials of generic rank do not have a dwc:genericName.
Examples	`Felis` (for scientificName `Felis concolor`, with accompanying values of `Puma concolor` in acceptedNameUsage and `Puma` in genus)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/genericName

subgenus
Title (Label)	Subgenus
Namespace	dwc
Table	Identification
Description	The full scientific name of the subgenus in which the dwc:Taxon is classified.
Notes	A value for this term should be a complete subgenus name as required by the appropriate nomenclatural code.
Examples	`Abacetus (Parastygis)` `Dicranum subgen. Orthodicranum`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/subgenus

infragenericEpithet
Title (Label)	Infrageneric Epithet
Namespace	dwc
Table	Identification
Description	The infrageneric part of a binomial name at ranks above species but below genus.
Notes	The term dwc:infragenericEpithet should be used in conjunction with dwc:genericName, dwc:specificEpithet, dwc:infraspecificEpithet, dwc:taxonRank and dwc:scientificNameAuthorship to represent the individual elements of the complete dwc:scientificName. It can be used to indicate the subgenus placement of a species, which in zoology is often given in parentheses. Can also be used to share infrageneric names such as botanical sections (e.g., `Vicia sect. Cracca`).
Examples	`Abacetillus` (for scientificName `Abacetus (Abacetillus) ambiguus`) `Cracca` (for scientificName `Vicia sect. Cracca`)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/infragenericEpithet

specificEpithet
Title (Label)	Specific Epithet
Namespace	dwc
Table	Identification
Description	The name of the first or species epithet of the dwc:scientificName.
Examples	`concolor` `gottschei`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/specificEpithet

infraspecificEpithet
Title (Label)	Infraspecific Epithet
Namespace	dwc
Table	Identification
Description	The name of the lowest or terminal infraspecific of the dwc:scientificName.
Notes	In botany, name strings in literature and identifications may have multiple infraspecific ranks. According to the International Code of Nomenclature for algae, fungi, and plants (Shenzhen Code Articles 6.7 & Art. 24.1), valid names only have two epithets, with the lowest rank being the dwc:infraspecificEpithet. For example: the dwc:infraspecificEpithet in the string `Indigofera charlieriana subsp. sessilis var. scaberrima` is `scaberrima` and the dwc:scientificName is `Indigofera charlieriana var. scaberrima (Schinz) J.B.Gillett`. Use dwc:verbatimIdentification for the full name string used in a dwc:Identification.
Examples	`concolor` (for scientificName `Puma concolor concolor`) `oxyadenia` (for scientificName `Quercus agrifolia var. oxyadenia`) `laxa` (for scientificName `Cheilanthes hirta f. laxa`) `scaberrima` (for scientificName `Indigofera charlieriana var. scaberrima`)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/infraspecificEpithet

cultivarEpithet
Title (Label)	Cultivar Epithet
Namespace	dwc
Table	Identification
Description	Part of the name of a cultivar, cultivar group or grex that follows the dwc:scientificName.
Notes	According to the Rules of the Cultivated Plant Code, a cultivar name consists of a botanical name followed by a cultivar epithet. The value given as the dwc:cultivarEpithet should exclude any quotes. The term dwc:taxonRank should be used to indicate which type of cultivated plant name (e.g., cultivar, cultivar group, grex) is concerned. This epithet, including any enclosing apostrophes or suffix, should be provided in dwc:scientificName as well.
Examples	`King Edward` (for scientificName `Solanum tuberosum 'King Edward'` and taxonRank `cultivar`) `Mishmiense` (for scientificName `Rhododendron boothii Mishmiense Group` and taxonRank `cultivar group`) `Atlantis` (for scientificName `Paphiopedilum Atlantis grex` and taxonRank `grex`)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/cultivarEpithet

nameAccordingTo
Title (Label)	Name According To
Namespace	dwc
Table	Identification
Description	The reference to the source in which the specific taxon concept circumscription is defined or implied - traditionally signified by the Latin "sensu" or "sec." (from secundum, meaning "according to"). For taxa that result from identifications, a reference to the keys, monographs, experts and other sources should be given.
Notes	This term provides context to the dwc:scientificName. Together with the dwc:scientificName, separated by `sensu` or `sec.`, it forms the taxon concept label, which may be seen as having the same relationship to dwc:taxonConceptID as, for example, dwc:acceptedNameUsage has to dwc:acceptedNameUsageID. When not provided, in Taxon Core data sets the dwc:nameAccordingTo can be taken to be the data set. In this case the data set mostly provides sufficient context to infer the delimitation of the taxon and its relationship with other taxa. In Occurrence Core data sets, when not provided, dwc:nameAccordingTo can be an underlying taxonomy of the data set, e.g., Plants of the World Online (http://powo.science.kew.org/) for vascular plant records in iNaturalist (in which case it should be provided), or, which is the case for most dwc:PreservedSpecimen data sets, the dwc:Identification, in which case there is no further context.
Examples	`Franz NM, Cardona-Duque J (2013) Description of two new species and phylogenetic reassessment of Perelleschus Wibmer & O’Brien, 1986 (Coleoptera: Curculionidae), with a complete taxonomic concept history of Perelleschus sec. Franz & Cardona-Duque, 2013. Syst Biodivers. 11: 209–236.` (as the full citation of the Franz & Cardona-Duque (2013) in Perelleschus splendida sec. Franz & Cardona-Duque (2013))
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/nameAccordingTo

nomenclaturalCode
Title (Label)	Nomenclatural Code
Namespace	dwc
Table	Identification
Description	The nomenclatural code (or codes in the case of an ambiregnal name) under which the dwc:scientificName is constructed.
Notes	Recommended best practice is to use a controlled vocabulary.
Examples	`ICN` `ICZN` `BC` `ICNCP` `BioCode`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/nomenclaturalCode

nomenclaturalStatus
Title (Label)	Nomenclatural Status
Namespace	dwc
Table	Identification
Description	The status related to the original publication of the name and its conformance to the relevant rules of nomenclature. It is based essentially on an algorithm according to the business rules of the code. It requires no taxonomic opinion.
Examples	`nom. ambig.` `nom. illeg.` `nom. subnud.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/nomenclaturalStatus

namePublishedIn
Title (Label)	Name Published In
Namespace	dwc
Table	Identification
Description	A reference for the publication in which the dwc:scientificName was originally established under the rules of the associated dwc:nomenclaturalCode.
Notes	A citation of the first publication of the name in its given combination, not the basionym / original name. Recombinations are often not published in zoology, in which case dwc:namePublishedIn should be empty.
Examples	`Pearson O. P., and M. I. Christie. 1985. Historia Natural, 5(37):388` `Forel, Auguste, Diagnosies provisoires de quelques espèces nouvelles de fourmis de Madagascar, récoltées par M. Grandidier., Annales de la Societe Entomologique de Belgique, Comptes-rendus des Seances 30, 1886`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/namePublishedIn

namePublishedInYear
Title (Label)	Name Published In Year
Namespace	dwc
Table	Identification
Description	The four-digit year in which the dwc:scientificName was published.
Examples	`1915` `2008`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/namePublishedInYear

taxonRemarks
Title (Label)	Taxon Remarks
Namespace	dwc
Table	Identification
Description	Comments or notes about the taxon or name.
Examples	`this name is a misspelling in common use`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/taxonRemarks

feedbackURL
Title (Label)	Feedback URL
Namespace	dwc
Table	Identification
Description	A uniform resource locator (URL) that points to a webpage on which a form may be submitted to gather feedback about the record.
Notes	A uniform resource locator (URL) that points to a webpage on which a form may be submitted to gather feedback about the record.
Examples	`https://example.com/new?title=New+issue&body=This+comment+is+about+CAN12345`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/feedbackURL

Identification Agent Role

Identifier: http://rs.tdwg.org/dwc-dp/1.0/identification-agent-role

Description: A role filled by a dcterms:Agent with respect to a dwc:Identification.

dcterms:isVersionOf: http://example.com/term-pending//identification-agent-role

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
identification_fk	role for	identification	identification_pk	foreign key	Yes	Yes
agent_fk	role holder	agent	agent_pk	foreign key	Yes	Yes

identification_fk
Title (Label)	Identification (Foreign Key)
Namespace	dwc
Table	Identification Agent Role
Description	An identifier for a dwc:Identification.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identificationID

agent_fk
Title (Label)	Agent (Foreign Key)
Namespace	dwc
Table	Identification Agent Role
Description	An identifier for a dcterms:Agent.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

agentRole
Title (Label)	Agent Role
Namespace	dwc
Table	Identification Agent Role
Description	A category that best matches the nature of a role of a dcterms:Agent.
Notes	Recommended best practice is to use a controlled vocabulary for the roles appropriate to the class of resource a dcterms:AgentRole is related to.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResource

agentRoleIRI
Title (Label)	Agent Role IRI
Namespace	dwciri
Table	Identification Agent Role
Description	An IRI of the controlled vocabulary value for a role of a dcterms:Agent.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResourceID

agentRoleSource
Title (Label)	Agent Role Source
Namespace	dc
Table	Identification Agent Role
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:agentRole is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

agentRoleOrder
Title (Label)	Agent Role Order
Namespace	dwc
Table	Identification Agent Role
Description	A numerical position of an AgentRole in a set of AgentRoles that have the same combination of agentRole, agentRoleIRI, agentRoleSource and related target identifier.
Notes	One could use dwc:agentRoleOrder to create an ordered list of collectors (dwc:agentRole = 'collector') for a dwc:MaterialEntity, for example. The first would have dwc:agentRoleOrder=1, the second would have dwc:agentRoleOrder=2.
Type	integer
Constraints	{"required": true, "minimum": 1}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentRoleOrder

agentRoleDate
Title (Label)	Agent Role Date
Namespace	dwc
Table	Identification Agent Role
Description	An interval during which a dcterms:AgentRole was in effect.
Notes	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionEffectiveDate

Identification Reference

Identifier: http://rs.tdwg.org/dwc-dp/1.0/identification-reference

Description: A dcterms:BibliographicResource related to a dwc:Identification.

dcterms:isVersionOf: http://example.com/term-pending//identification-reference

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
reference_fk	used	bibliographic-resource	reference_pk	foreign key	Yes	No
identification_fk	used for	identification	identification_pk	foreign key	Yes	Yes

reference_fk
Title (Label)	Reference (Foreign Key)
Namespace	dwc
Table	Identification Reference
Description	An identifier for a dcterms:BibliographicResource.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/referenceID

identification_fk
Title (Label)	Identification (Foreign Key)
Namespace	dwc
Table	Identification Reference
Description	An identifier for a dwc:Protocol.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identificationID

relationshipType
Title (Label)	Relationship Type
Namespace	dwc
Table	Identification Reference
Description	A relationship of a subject resource to a dcterms:BibliographicResource.
Notes	Recommended best practice is to use a controlled vocabulary.
Examples	`cited in` `referenced`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResource

Identification Taxon

Identifier: http://rs.tdwg.org/dwc-dp/1.0/identification-taxon

Description: A construct of components and positions of dwc:Taxa in a dwc:Identification.

dcterms:isVersionOf: http://example.com/term-pending//identification-taxon

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
identification_fk	for	identification	identification_pk	foreign key	Yes	Yes

identification_fk
Title (Label)	Identification (Foreign Key)
Namespace	dwc
Table	Identification Taxon
Description	An identifier for a dwc:Identification.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identificationID

taxonSortOrder
Title (Label)	Taxon Sort Order
Namespace	dwc
Table	Identification Taxon
Description	A numerical position of a dwc:Taxon in a dwc:taxonFormula.
Notes	The number signifies which dwc:Taxon in the related dwc:taxonFormula this record refers to (e.g., `1` refs to the `A` in the dwc:taxonFormula "A x B").
Examples	`1` `2`
Type	integer
Constraints	{"required": true, "minimum": 1}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/taxonSortOrder

taxonID
Title (Label)	Taxon ID
Namespace	dwc
Table	Identification Taxon
Description	An identifier for a dwc:Taxon.
Notes	In DwC-DP, the dwc:taxonID is always an external link to a taxon record. As such, if present, it should be a resolvable globally unique identifier. See the Identifiers section of https://github.com/CatalogueOfLife/coldp/blob/master/README.md.
Examples	`8fa58e08-08de-4ac1-b69c-1235340b7001` `32567` `https://www.gbif.org/species/212`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/taxonID

scientificNameID
Title (Label)	Scientific Name ID
Namespace	dwc
Table	Identification Taxon
Description	An identifier for the nomenclatural (not taxonomic) details of a scientific name.
Notes	In DwC-DP, the dwc:scientificNameID is always an external link to a taxon record. As such, if present, it should be a resolvable globally unique identifier. See the Identifiers section of https://github.com/CatalogueOfLife/coldp/blob/master/README.md.
Examples	`urn:lsid:ipni.org:names:37829-1:1.3`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/scientificNameID

geologicalClassificationCodes
Title (Label)	Geological Classification Codes
Namespace	dwc
Table	Identification Taxon
Description	A list (concatenated and separated) of codes that each identifies a name from a classification system applied to a dwc:GeologicalMaterial.
Notes	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Examples	`71.02.02a.01` ("muscovite" in the Dana classification system) `9.AD.25` ("garnet group" in the Nickel-Strunz classification system) `75.01.03.01 \| 4.DA.05` ("quartz" the Dana classification system and "quartz group" in the Nickel-Strunz classification system)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/classificationCodes

geologicalMaterialNames
Title (Label)	Geological Material Names
Namespace	dwc
Table	Identification Taxon
Description	A list (concatenated and separated) of mineral or lithotaxon names for a dwc:GeologicalMaterial.
Notes	May includes both informal (e.g., variety, synonym) and formal (classification) names. The first name in the list should be considered the preferred name. Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Examples	`quartz \| smoky quartz` `muscovite` `garnet group`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/geologicalMaterialNames

scientificName
Title (Label)	Scientific Name
Namespace	dwc
Table	Identification Taxon
Description	A scientific name string, not including authorship, date or identification qualifiers.
Examples	`Coleoptera` (order) `Vespertilionidae` (family) `Manis` (genus) `Ctenomys sociabilis` (genus + specificEpithet) `Ambystoma tigrinum diaboli` (genus + specificEpithet + infraspecificEpithet) `Quercus agrifolia var. oxyadenia` (genus + specificEpithet + taxonRank + infraspecificEpithet) `×Agropogon littoralis` `Mentha ×smithiana` `Agrostis stolonifera L. × Polypogon monspeliensis`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/scientificName

scientificNameAuthorship
Title (Label)	Scientific Name Authorship
Namespace	dwc
Table	Identification Taxon
Description	The authorship information for a dwc:scientificName formatted according to the conventions of the applicable dwc:nomenclaturalCode.
Examples	`(Torr.) J.T. Howell` `(Martinovský) Tzvelev` `(Györfi, 1952)`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/scientificNameAuthorship

vernacularName
Title (Label)	Vernacular Name
Namespace	dwc
Table	Identification Taxon
Description	A common or vernacular name.
Examples	`Andean Condor` `death cap` `rainbow trout` `Smoky Quartz` `Amethyst` `Agate` `Tiger's Eye`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/vernacularName

taxonRank
Title (Label)	Taxon Rank
Namespace	dwc
Table	Identification Taxon
Description	A taxonomic rank of the most specific name in a dwc:scientificName.
Notes	Recommended best practice is to use a controlled vocabulary. The taxon ranks of algae, fungi and plants are defined in the International Code of Nomenclature for algae, fungi, and plants (Shenzhen Code Articles H3.2, H4.4 and H.3.1).
Examples	`subspecies` `varietas` `forma` `species` `genus` `nothogenus` `nothospecies` `nothosubspecies`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/taxonRank

classificationSystem
Title (Label)	Classification System
Namespace	dc
Table	Identification Taxon
Description	A reference to the classification system in which an authoritative name or formal classification belongs.
Notes	Recommended best practice is to provide a formal citation or IRI. This term should not be confused with dwc:namePublishedIn as a classification system is not equivalent to a publication in which a taxon is first described. This term should not be confused with dwc:nameAccordingTo as a classification system is not equivalent to a publication or other source in which a specific taxon concept circumscription is defined or implied. This term should not be confused with dwc:nomenclaturalCode as a classification system is not equivalent to code of nomenclature, which states the rules for naming rather than an organized source of names. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`Strunz, H., Nickel, E.H. (2001): Strunz Mineralogical Tables. Chemical-Structural Mineral Classification System. 9th edition. E. Schweizerbart’sche Verlagsbuchhandlung, Stuttgart, ix + 870 p. (ISBN 3-510-65188-X)` `Gaines, R.V., Skinner, H.C.W., Foord, E.E., Mason, B., Rosenzweig, A. (1997): Dana's New Mineralogy: The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana. 8th edition. John Wiley & Sons, New York, xlv + 1819 p. (ISBN 0-471-19310-0).` `https://kos.geospecimens.org/vocab/meteorite-classification` `Mammal Diversity Database. (2026). Mammal Diversity Database (Version 2.5) [Data set]. [Zenodo](https://zenodo.org/records/10595931). https://doi.org/10.5281/zenodo.17033774` `Index Fungorum. (2026). Index Fungorum electronic database. Royal Botanic Gardens, Kew. Retrieved August 17, 2026, from indexfungorum.org.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/classificationSystem

kingdom
Title (Label)	Kingdom
Namespace	dwc
Table	Identification Taxon
Description	The full scientific name of the kingdom in which the dwc:Taxon is classified.
Examples	`Animalia` `Archaea` `Bacteria` `Chromista` `Fungi` `Plantae` `Protozoa` `Viruses`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/kingdom

phylum
Title (Label)	Phylum
Namespace	dwc
Table	Identification Taxon
Description	The full scientific name of the phylum or division in which the dwc:Taxon is classified.
Examples	`Chordata` (phylum) `Bryophyta` (division)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/phylum

class
Title (Label)	Class
Namespace	dwc
Table	Identification Taxon
Description	The full scientific name of the class in which the dwc:Taxon is classified.
Examples	`Mammalia` `Hepaticopsida`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/class

order
Title (Label)	Order
Namespace	dwc
Table	Identification Taxon
Description	The full scientific name of the order in which the dwc:Taxon is classified.
Examples	`Carnivora` `Monocleales`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/order

family
Title (Label)	Family
Namespace	dwc
Table	Identification Taxon
Description	The full scientific name of the family in which the dwc:Taxon is classified.
Examples	`Felidae` `Monocleaceae`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/family

subfamily
Title (Label)	Subfamily
Namespace	dwc
Table	Identification Taxon
Description	The full scientific name of the subfamily in which the dwc:Taxon is classified.
Examples	`Periptyctinae` `Orchidoideae` `Sphindociinae`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/subfamily

genus
Title (Label)	Genus
Namespace	dwc
Table	Identification Taxon
Description	The full scientific name of the genus in which the dwc:Taxon is classified.
Examples	`Puma` `Monoclea`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/genus

genericName
Title (Label)	Generic Name
Namespace	dwc
Table	Identification Taxon
Description	The genus part of the dwc:scientificName without authorship.
Notes	For synonyms the accepted genus and the genus part of the name may be different. The term dwc:genericName should be used together with dwc:specificEpithet to form a binomial and with dwc:infraspecificEpithet to form a trinomial. The term dwc:genericName should only be used for combinations. Uninomials of generic rank do not have a dwc:genericName.
Examples	`Felis` (for scientificName `Felis concolor`, with accompanying values of `Puma concolor` in acceptedNameUsage and `Puma` in genus)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/genericName

subgenus
Title (Label)	Subgenus
Namespace	dwc
Table	Identification Taxon
Description	The full scientific name of the subgenus in which the dwc:Taxon is classified.
Notes	A value for this term should be a complete subgenus name as required by the appropriate nomenclatural code.
Examples	`Abacetus (Parastygis)` `Dicranum subgen. Orthodicranum`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/subgenus

infragenericEpithet
Title (Label)	Infrageneric Epithet
Namespace	dwc
Table	Identification Taxon
Description	The infrageneric part of a binomial name at ranks above species but below genus.
Examples	`Abacetillus` (for scientificName `Abacetus (Abacetillus) ambiguus`) `Cracca` (for scientificName `Vicia sect. Cracca`)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/infragenericEpithet

specificEpithet
Title (Label)	Specific Epithet
Namespace	dwc
Table	Identification Taxon
Description	The name of the first or species epithet of the dwc:scientificName.
Examples	`concolor` `gottschei`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/specificEpithet

infraspecificEpithet
Title (Label)	Infraspecific Epithet
Namespace	dwc
Table	Identification Taxon
Description	The name of the lowest or terminal infraspecific of the dwc:scientificName.
Notes	In botany, name strings in literature and identifications may have multiple infraspecific ranks. According to the International Code of Nomenclature for algae, fungi, and plants (Shenzhen Code Articles 6.7 & Art. 24.1), valid names only have two epithets, with the lowest rank being the dwc:infraspecificEpithet. For example: the dwc:infraspecificEpithet in the string Indigofera charlieriana subsp. sessilis var. scaberrima is scaberrima and the dwc:scientificName is Indigofera charlieriana var. scaberrima (Schinz) J.B.Gillett. Use dwc:verbatimIdentification for the full name string used in a dwc:Identification.
Examples	`concolor` (for scientificName `Puma concolor concolor`) `oxyadenia` (for scientificName `Quercus agrifolia var. oxyadenia`) `laxa` (for scientificName `Cheilanthes hirta f. laxa`) `scaberrima` (for scientificName `Indigofera charlieriana var. scaberrima`)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/infraspecificEpithet

cultivarEpithet
Title (Label)	Cultivar Epithet
Namespace	dwc
Table	Identification Taxon
Description	Part of the name of a cultivar, cultivar group or grex that follows the dwc:scientificName.
Notes	According to the Rules of the Cultivated Plant Code, a cultivar name consists of a botanical name followed by a cultivar epithet. The value given as the dwc:cultivarEpithet should exclude any quotes. The term dwc:taxonRank should be used to indicate which type of cultivated plant name (e.g., cultivar, cultivar group, grex) is concerned. This epithet, including any enclosing apostrophes or suffix, should be provided in dwc:scientificName as well.
Examples	`King Edward` (for scientificName `Solanum tuberosum 'King Edward'` and taxonRank `cultivar`) `Mishmiense` (for scientificName `Rhododendron boothii Mishmiense Group` and taxonRank `cultivar group`) `Atlantis` (for scientificName `Paphiopedilum Atlantis grex` and taxonRank `grex`)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/cultivarEpithet

nameAccordingTo
Title (Label)	Name According To
Namespace	dwc
Table	Identification Taxon
Description	The reference to the source in which the specific taxon concept circumscription is defined or implied - traditionally signified by the Latin "sensu" or "sec." (from secundum, meaning "according to"). For taxa that result from identifications, a reference to the keys, monographs, experts and other sources should be given.
Notes	This term provides context to the dwc:scientificName. Together with the dwc:scientificName, separated by sensu or sec., it forms the taxon concept label, which may be seen as having the same relationship to dwc:taxonConceptID as, for example, dwc:acceptedNameUsage has to dwc:acceptedNameUsageID. When not provided, in Taxon Core data sets the dwc:nameAccordingTo can be taken to be the data set. In this case the data set mostly provides sufficient context to infer the delimitation of the taxon and its relationship with other taxa. In Occurrence Core data sets, when not provided, dwc:nameAccordingTo can be an underlying taxonomy of the data set, e.g., Plants of the World Online (http://powo.science.kew.org/) for vascular plant records in iNaturalist (in which case it should be provided), or, which is the case for most dwc:PreservedSpecimen data sets, the dwc:Identification, in which case there is no further context.
Examples	`Franz NM, Cardona-Duque J (2013) Description of two new species and phylogenetic reassessment of Perelleschus Wibmer & O’Brien, 1986 (Coleoptera: Curculionidae), with a complete taxonomic concept history of Perelleschus sec. Franz & Cardona-Duque, 2013. Syst Biodivers. 11: 209–236.` (as the full citation of the Franz & Cardona-Duque (2013) in Perelleschus splendida sec. Franz & Cardona-Duque (2013))
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/nameAccordingTo

nomenclaturalCode
Title (Label)	Nomenclatural Code
Namespace	dwc
Table	Identification Taxon
Description	The nomenclatural code (or codes in the case of an ambiregnal name) under which the dwc:scientificName is constructed.
Notes	Recommended best practice is to use a controlled vocabulary.
Examples	`ICN` `ICZN` `BC` `ICNCP` `BioCode`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/nomenclaturalCode

nomenclaturalStatus
Title (Label)	Nomenclatural Status
Namespace	dwc
Table	Identification Taxon
Description	The status related to the original publication of the name and its conformance to the relevant rules of nomenclature. It is based essentially on an algorithm according to the business rules of the code. It requires no taxonomic opinion.
Examples	`nom. ambig.` `nom. illeg.` `nom. subnud.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/nomenclaturalStatus

namePublishedIn
Title (Label)	Name Published In
Namespace	dwc
Table	Identification Taxon
Description	A reference for the publication in which the dwc:scientificName was originally established under the rules of the associated dwc:nomenclaturalCode.
Notes	A citation of the first publication of the name in its given combination, not the basionym / original name. Recombinations are often not published in zoology, in which case dwc:namePublishedIn should be empty.
Examples	`Pearson O. P., and M. I. Christie. 1985. Historia Natural, 5(37):388` `Forel, Auguste, Diagnosies provisoires de quelques espèces nouvelles de fourmis de Madagascar, récoltées par M. Grandidier., Annales de la Societe Entomologique de Belgique, Comptes-rendus des Seances 30, 1886`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/namePublishedIn

namePublishedInYear
Title (Label)	Name Published In Year
Namespace	dwc
Table	Identification Taxon
Description	The four-digit year in which the dwc:scientificName was published.
Examples	`1915` `2008`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/namePublishedInYear

Material

Identifier: http://rs.tdwg.org/dwc-dp/1.0/material

Description: An entity that can be identified, exist for some period of time, and consist in whole or in part of physical matter while it exists.

Notes: The term is defined at the most general level to admit descriptions of any subtype of material entity within the scope of Darwin Core. In particular, any kind of material sample, preserved specimen, fossil, or exemplar from living collections is intended to be subsumed under this term.

Examples:

`the entire contents of a trawl`

`a subset of the contents of a trawl`

`the body of a fish`

`the stomach contents of a fish`

`a rock containing fossils`

`a fossil within a rock`

`an herbarium sheet with its attached plant specimen`

`a flower on a plant specimen`

`a pollen grain`

`a specific water sample`

`an isolated molecule of DNA`

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/MaterialEntity

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
materialEntity_pk				primary key	Yes	Yes
materialEntityID				weak primary key	No	No
collectionEvent_fk	collected during	event	event_pk	foreign key	Yes	No
evidenceForOccurrence_fk	evidence for	occurrence	occurrence_pk	foreign key	Yes	No
derivedFromMaterialEntity_fk	derived from	material	materialEntity_pk	foreign key	Yes	No
derivedFromMaterialEntityID	derived from	material	materialEntityID	weak foreign key	No	No
derivationEvent_fk	derived during	event	event_pk	foreign key	Yes	No
derivationEventID	derived during	event	eventID	weak foreign key	No	No
isPartOfMaterialEntity_fk	part of	material	materialEntity_pk	foreign key	Yes	No
isPartOfMaterialEntityID	part of	material	materialEntityID	weak foreign key	No	No
institutionID	stored in	agent	agentID	weak foreign key	No	No
ownerInstitutionID	owned by	agent	agentID	weak foreign key	No	No
collectedBy_fk	collected by	agent	agent_pk	foreign key	Yes	No
collectedByID	collected by	agent	agentID	weak foreign key	No	No
identifiedBy_fk	identified by	agent	agent_pk	foreign key	Yes	No
identifiedByID	identified by	agent	agentID	weak foreign key	No	No
provenance_fk	has	provenance	provenance_pk	foreign key	Yes	No
usagePolicy_fk	has	usage-policy	usagePolicy_pk	foreign key	Yes	No
owner_fk	owned by	agent	agent_pk	foreign key	Yes	No

materialEntity_pk
Title (Label)	Material Entity (Primary Key)
Namespace	dwc
Table	Material
Description	A unique identifier for a dwc:MaterialEntity.
Notes	The value in this field MAY be changed in aggregation to guarantee uniqueness.
Examples	`06809dc5-f143-459a-be1a-6f03e63fc083`
Type	string
Constraints	{"required": true, "unique": true}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/materialEntityID

materialEntityID
Title (Label)	Material Entity ID
Namespace	dwc
Table	Material
Description	An identifier for a dwc:MaterialEntity.
Notes	The value in this field MUST be preserved in aggregation. Recommended best practice is to use a globally unique identifier.
Examples	`06809dc5-f143-459a-be1a-6f03e63fc083`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/materialEntityID

digitalSpecimenID
Title (Label)	Digital Specimen ID
Namespace	dwc
Table	Material
Description	An identifier for a Digital Specimen resource.
Notes	A Digital Specimen is defined in https://doi.org/10.3897/rio.7.e67379. A dwc:digitalSpecimenID is intended to uniquely and persistently identify a Digital Specimen. Recommended best practice is to use a DOI with machine readable metadata in the DOI record that uses a community agreed metadata profile (also known as FDO profile) for a Digital Specimen. For an example see: https://doi.org/10.3535/N75-CR4-0SM?noredirect. The identifier is for a digital information artifact (the Digital Specimen) as opposed to an identifier for a specific instance of a dwc:MaterialEntity.
Examples	`https://doi.org/10.3535/M42-Z4P-DRD` `https://doi.org/10.3535/M42-Z4P-DRD?urlappend=/1` `https://doi.org/10.3535/M42-Z4P-DRD?locatt=/1` `doi:10.3535/M42-Z4P-DRD`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/digitalSpecimenID

collectionEvent_fk
Title (Label)	Collection Event (Foreign Key)
Namespace	dwc
Table	Material
Description	An identifier for a dwc:Event during which a dwc:MaterialEntity was collected.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/eventID

evidenceForOccurrence_fk
Title (Label)	Evidence For Occurrence (Foreign Key)
Namespace	dwc
Table	Material
Description	An identifier for a dwc:Occurrence for which a dwc:MaterialEntity provides evidence.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/occurrenceID

derivedFromMaterialEntity_fk
Title (Label)	Derived From Material Entity (Foreign Key)
Namespace	dwc
Table	Material
Description	An identifier for a dwc:MaterialEntity from which this dwc:MaterialEntity was derived.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/materialEntityID

derivedFromMaterialEntityID
Title (Label)	Derived From Material Entity ID
Namespace	dwc
Table	Material
Description	An identifier for a dwc:MaterialEntity from which this dwc:MaterialEntity was derived.
Notes	This dwc:MaterialEntity is separate from a dwc:MaterialEntity from which it was derived (cf. dwc:isPartOfMaterialEntityID). Recommended best practice is to use a globally unique identifier. The value in this field MAY refer to a dwc:MaterialEntity within or external to the dataset in which this record originated.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/materialEntityID

derivationEvent_fk
Title (Label)	Derivation Event (Foreign Key)
Namespace	dwc
Table	Material
Description	An identifier for a dwc:Event during which a dwc:MaterialEntity was derived from another dwc:MaterialEntity.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/eventID

derivationEventID
Title (Label)	Derivation Event ID
Namespace	dwc
Table	Material
Description	An identifier for a dwc:Event during which a dwc:MaterialEntity was derived from another dwc:MaterialEntity.
Notes	The value in this field MUST be preserved in aggregation. Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/eventID

isPartOfMaterialEntity_fk
Title (Label)	Is Part Of Material Entity (Foreign Key)
Namespace	dwc
Table	Material
Description	An identifier for a dwc:MaterialEntity of which this dwc:MaterialEntity is a part.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/isPartOfMaterialEntityID

isPartOfMaterialEntityID
Title (Label)	Is Part Of Material Entity ID
Namespace	dwc
Table	Material
Description	An identifier for a dwc:MaterialEntity of which this dwc:MaterialEntity is a part.
Notes	This dwc:MaterialEntity was not taken from a dwc:MaterialEntity of which it is a part. Recommended best practice is to use a globally unique identifier. The value in this field MAY refer to a dwc:MaterialEntity within or external to the dataset in which this record originated.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/isPartOfMaterialEntityID

materialRole
Title (Label)	Material Role
Namespace	dwc
Table	Material
Description	A category that best matches the nature of the relationship between a dwc:MaterialEntity and another dwc:MaterialEntity of which it is a part.
Examples	`matrix` `groundmass` `phenocryst` `xenolith` `vein`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/materialRole

materialProportion
Title (Label)	Material Proportion
Namespace	dwc
Table	Material
Description	The qualitative or quantitative abundance of a dwc:MaterialEntity with respect to another dwc:MaterialEntity of which it is a part.
Notes	Recommended best practice is to use a controlled vocabulary such as http://resource.geosciml.org/classifier/cgi/proportionterm. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`20%` `minor` `dominant`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/materialProportion

materialEntityCategory
Title (Label)	Material Entity Category
Namespace	dwc
Table	Material
Description	A high-level, mutually exclusive classification describing the fundamental substance and origin of a dwc:MaterialEntity.
Notes	Recommended best practice is to use a limited, tightly controlled vocabulary.
Examples	`preserved` `living` `fossilized` `tissue` `DNA extract` `non-biological` `human-made`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/materialEntityCategory

materialEntityType
Title (Label)	Material Entity Type
Namespace	dwc
Table	Material
Description	A more generic classification of a dwc:MaterialEntity than dwc:preparations but less broad than dwc:materialEntityCategory.
Notes	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`Macro-object` `Micro-object` `Oversized object` `Cut/polished gemstone` `Compound Specimen` `Core` `Mixed Materials` `Environmental sample` `Microscope slide` `Spore print` `Macrofossil` `Mesofossil` `Microfossil` `Pinned object/specimen` `Taxidermy mount` `Blood sampling cards` `Oversized fossil` `Anthropogenic Artifact`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/materialEntityType

discipline
Title (Label)	Discipline
Namespace	dwc
Table	Material
Description	The primary branch or branches of knowledge represented by a dwc:MaterialEntity.
Notes	This term can be used to classify records according to branches of knowledge. Recommended best practice is to use a controlled vocabulary and to separate the values in a list with space vertical bar space (` \| `). It is also recommended to use this field to describe specimenType in MIDS.
Examples	`Botany` `Botany \| Virology \| Taxonomy`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/discipline

sampledFeatureType
Title (Label)	Sampled Feature Type
Namespace	dwc
Table	Material
Description	The type of naturally occurring or anthropogenic physical feature from which a dwc:MaterialEntity was sampled.
Notes	This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`float` `mine dump` `mine/quarry pit` `outcrop` `erratic boulder`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/sampledFeatureType

institutionCode
Title (Label)	Institution Code
Namespace	dwc
Table	Material
Description	A name (or acronym) in use by an institution having custody of a dwc:MaterialEntity.
Examples	`MVZ` `FMNH` `CLO` `UCMP`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/institutionCode

institutionID
Title (Label)	Institution ID
Namespace	dwc
Table	Material
Description	An identifier for an organization.
Notes	For physical specimens, the recommended best practice is to use a globally unique and resolvable identifier from a collections registry such as the Research Organization Registry (ROR) or the Global Registry of Scientific Collections (https://scientific-collections.gbif.org/). The value in this field MAY refer to a dcterms:Agent within or external to the dataset in which this record originated.
Examples	`https://ror.org/015hz7p22` `http://grscicoll.org/institution/museum-southwestern-biology` `https://www.gbif.org/grscicoll/institution/e3d4dcc4-81e2-444c-8a5c-41d1044b5381`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/institutionID

ownerInstitutionCode
Title (Label)	Owner Institution Code
Namespace	dwc
Table	Material
Description	A name (or acronym) in use by an institution having ownership of a dwc:MaterialEntity.
Examples	`NPS` `APN` `InBio`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/ownerInstitutionCode

ownerInstitutionID
Title (Label)	Owner Institution ID
Namespace	dwc
Table	Material
Description	An identifier for an institution that owns a dwc:MaterialEntity.
Notes	For physical specimens, the recommended best practice is to use a globally unique and resolvable identifier from a collections registry such as the Research Organization Registry (ROR) or the Global Registry of Scientific Collections (https://scientific-collections.gbif.org/). The value in this field MAY refer to a dcterms:Agent within or external to the dataset in which this record originated.
Examples	`https://orcid.org/0000-0002-1825-0097`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

collectionCode
Title (Label)	Collection Code
Namespace	dwc
Table	Material
Description	A name, acronym, coden, or initialism identifying a collection.
Examples	`Mammals` `Hildebrandt` `EBIRD` `VP`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/collectionCode

collectionID
Title (Label)	Collection ID
Namespace	dwc
Table	Material
Description	An identifier for a collection.
Notes	For physical specimens, the recommended best practice is to use a globally unique and resolvable identifier from a collections registry such as the Global Registry of Scientific Collections (https://scientific-collections.gbif.org/).
Examples	`https://scientific-collections.gbif.org/collection/fbd3ed74-5a21-4e01-b86a-33d36f032d9c`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/collectionID

catalogNumber
Title (Label)	Catalog Number
Namespace	dwc
Table	Material
Description	An identifier (preferably unique) for a dwc:MaterialEntity within a collection.
Examples	`145732` `145732a` `2008.1334` `R-4313`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/catalogNumber

otherCatalogNumbers
Title (Label)	Other Catalog Numbers
Namespace	dwc
Table	Material
Description	A list (concatenated and separated) of previous or alternate fully qualified catalog numbers or other human-used identifiers for the same dwc:MaterialEntity, whether in the current or any other data set or collection.
Notes	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Examples	`FMNH:Mammal:1234` `NPS YELLO6778 \| MBG 33424`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/otherCatalogNumbers

collectorNumber
Title (Label)	Collector Number
Namespace	dwc
Table	Material
Description	An identifier given to a dwc:MaterialEntity at the time it was collected.
Notes	Often serves as a link between field notes and a dwc:MaterialEntity, such as a specimen collector's number.
Examples	`OPP 7101`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/recordNumber

collectedBy
Title (Label)	Collected By
Namespace	dwc
Table	Material
Description	A name for a dcterms:Agent responsible for recording a dwc:MaterialEntity.
Notes	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Examples	`José E. Crespo` `Oliver P. Pearson \| Anita K. Pearson` (where the value in dwc:collectorNumber `OPP 7101` corresponds to the collector number for the specimen in the field catalog of Oliver P. Pearson)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/recordedBy

collectedBy_fk
Title (Label)	Collected By (Foreign Key)
Namespace	dwc
Table	Material
Description	An identifier for the dcterms:Agent responsible for collecting a dwc:MaterialEntity.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/version/recordedByID

collectedByID
Title (Label)	Collected By ID
Namespace	dwc
Table	Material
Description	An identifier for the dcterms:Agent responsible for collecting a dwc:MaterialEntity.
Notes	The value in this field MAY refer to a dcterms:Agent within or external to the dataset in which this record originated.
Examples	`https://orcid.org/0000-0002-1825-0097` `https://ror.org/00mh9zx15`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/version/recordedByID

objectQuantity
Title (Label)	Object Quantity
Namespace	dwc
Table	Material
Description	A number or enumeration value for the quantity of differentiable dwc:MaterialEntities comprising this dwc:MaterialEntity.
Notes	An dwc:objectQuantity must have a corresponding dwc:objectQuantityType.
Examples	`27` (objectQuantity) with `individuals` (objectQuantityType) `many` (objectQuantity) with `individuals` (objectQuantityType) `3` (objectQuantity) with `legs` (objectQuantityType)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/objectQuantity

objectQuantityType
Title (Label)	Object Quantity Type
Namespace	dwc
Table	Material
Description	The type of quantification system used for the quantity of dwc:MaterialEntities.
Notes	An dwc:objectQuantityType must have a corresponding dwc:objectQuantity.
Examples	`27` (objectQuantity) with `individuals` (objectQuantityType) `many` (objectQuantity) with `individuals` (objectQuantityType) `3` (objectQuantity) with `legs` (objectQuantityType)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/objectQuantityType

preparations
Title (Label)	Preparations
Namespace	dwc
Table	Material
Description	A list (concatenated and separated) of preparations and preservation methods for a dwc:MaterialEntity.
Notes	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `). This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`fossil` `cast` `photograph` `DNA extract` `skin \| skull \| skeleton` `whole animal (EtOH) \| tissue (EDTA)`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/preparations

disposition
Title (Label)	Disposition
Namespace	dwc
Table	Material
Description	A current state of a dwc:MaterialEntity with respect to where it can be found.
Notes	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`in collection` `missing` `on loan` `used up` `destroyed` `deaccessioned`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/disposition

measuredMassInGrams
Title (Label)	Measured Mass In Grams
Namespace	dwc
Table	Material
Description	Mass of a dwc:MaterialEntity, measured in grams.
Examples	`0.03` `2.34` `56.6`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/measuredMassInGrams

verbatimMass
Title (Label)	Verbatim Mass
Namespace	dwc
Table	Material
Description	The verbatim original representation of the mass of a dwc:MaterialEntity, including original units of measurement.
Examples	`11.01 Lbs` `105.07 g` `2.45 kg`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/verbatimMass

verbatimLabel
Title (Label)	Verbatim Label
Namespace	dwc
Table	Material
Description	A verbatim original representation of the written information affixed or related to a dwc:MaterialEntity.
Notes	The content of this term should include no embellishments, prefixes, headers or other additions made to the text. Abbreviations must not be expanded and supposed misspellings must not be corrected. Lines or breakpoints between blocks of text that could be verified by seeing the original labels or images of them may be used. Examples of material entities include preserved specimens, fossil specimens, and material samples. Best practice is to use UTF-8 for all characters. Best practice is to add comment “verbatimLabel derived from human transcription” in dwc:materialEntityRemarks. Examples can be found at https://dwc.tdwg.org/examples/verbatimLabel.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/verbatimLabel

associatedSequences
Title (Label)	Associated Sequences
Namespace	dwc
Table	Material
Description	A list (concatenated and separated) of dcterms:BibliographicResources for dwc:NucleotideSequences associated with a dwc:MaterialEntity.
Examples	`http://www.ncbi.nlm.nih.gov/nuccore/U34853.1` `http://www.ncbi.nlm.nih.gov/nuccore/GU328060 \| http://www.ncbi.nlm.nih.gov/nuccore/AF326093`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/associatedSequences

materialReferences
Title (Label)	Material References
Namespace	dwc
Table	Material
Description	A list (concatenated and separated) of dcterms:BibliographicResources associated with a dwc:MaterialEntity.
Notes	Recommended best practice is to separate the values in a list with space vertical bar space ( \| ). Note that the intended usage of the term dcterms:references in Darwin Core is to point to the definitive source representation of the resource, if one is available. Note also that the intended usage of dcterms:bibliographicCitation in Darwin Core is to provide the preferred way to cite the resource itself.
Examples	`http://www.sciencemag.org/cgi/content/abstract/322/5899/261` `Christopher J. Conroy, Jennifer L. Neuwald. 2008. Phylogeographic study of the California vole, Microtus californicus Journal of Mammalogy, 89(3):755-767.` `Steven R. Hoofer and Ronald A. Van Den Bussche. 2001. Phylogenetic Relationships of Plecotine Bats and Allies Based on Mitochondrial Ribosomal Sequences. Journal of Mammalogy 82(1):131-137. \| Walker, Faith M., Jeffrey T. Foster, Kevin P. Drees, Carol L. Chambers. 2014. Spotted bat (Euderma maculatum) microsatellite discovery using illumina sequencing. Conservation Genetics Resources.` `https://doi.org/10.3897/BDJ.14.e177525`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/associatedReferences

treatments
Title (Label)	Treatments
Namespace	dwc
Table	Material
Description	Description of any processes or curatorial actions taken specifically to mitigate damage to a dwc:MaterialEntity.
Notes	Includes both proactive and reactive actions.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/treatments

handlingRequirements
Title (Label)	Handling Requirements
Namespace	dwc
Table	Material
Description	A description of the procedures required to preserve and protect a dwc:MaterialEntity during handling.
Examples	`handle with gloves` `not to be taken out of storage medium` `avoid contact with direct sunlight`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/handlingRequirements

hazardType
Title (Label)	Hazard Type
Namespace	dwc
Table	Material
Description	A term that belongs to a hazard classification scheme based on a set of unique characteristics and negative health outcomes.
Notes	Recommended best practice is to use a controlled vocabulary such as https://kos.geospecimens.org/vocab/hazard-type. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`carcinogen` `skin irritant` `radioactive` `toxic`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/hazardType

hazardRemarks
Title (Label)	Hazard Remarks
Namespace	dwc
Table	Material
Description	Comments or notes about the type of hazards associated with a dwc:MaterialEntity.
Examples	`asbestos` `slightly radioactive` `requires skin protection`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/hazardRemarks

damageRemarks
Title (Label)	Damage Remarks
Namespace	dwc
Table	Material
Description	A general description of any physical changes to a dwc:MaterialEntity that have negatively affected its value.
Notes	See Royce, K., Baars, C., & Viles, H. (2021). Defining Damage and Susceptibility, with Implications for Mineral Specimens and Objects: Introducing the Mineral Susceptibility Database. Studies in Conservation, 68(3), 298-317. https://doi.org/10.1080/00393630.2021.2015947
Examples	`Due to oxidation and hydration of the pyrite in the coal, the sample has largely decayed to a coal powder with some larger coal pieces \| Some terminations broken off \| Attached label not legible (or torn, or covered)`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/damageRemarks

materialDescription
Title (Label)	Material Description
Namespace	dwc
Table	Material
Description	Remarks on the physical characteristics of a dwc:MaterialEntity, particularly those that distinguish it from otherwise similar dwc:MaterialEntities.
Examples	`Showpiece` `Historically valuable` `Extraordinary composition` `Two generations of quartz`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/materialDescription

materialEntityRemarks
Title (Label)	Material Entity Remarks
Namespace	dwc
Table	Material
Description	Comments or notes about a dwc:MaterialEntity.
Examples	`found in association with charred remains` `some original fragments missing`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/materialEntityRemarks

verbatimIdentification
Title (Label)	Verbatim Identification
Namespace	dwc
Table	Material
Description	A string representing the classification as it appeared in the original record.
Notes	This term is meant to allow the capture of an unaltered original identification/determination, including identification qualifiers, hybrid formulas, uncertainties, etc. This term is meant to be used in addition to dwc:geologicalMaterialNames or dwc:scientificName (and dwc:identificationQualifier etc.), not instead of it.
Examples	`Peromyscus sp.` `Ministrymon sp. nov. 1` `Anser anser × Branta canadensis` `Pachyporidae?`, `Potentilla × pantotricha Soják` `Aconitum pilipes × A. variegatum `Lepomis auritus x cyanellus`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/verbatimIdentification

typeStatus
Title (Label)	Type Status
Namespace	dwc
Table	Material
Description	A nomenclatural type (type status, typified scientific name, publication) applied to the subject.
Notes	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `). This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`holotype`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/typeStatus

typeDesignationType
Title (Label)	typeDesignationType
Namespace	gbif
Table	Material
Description	A category that best matches the nature of a type designation.
Notes	From https://rs.gbif.org/extension/gbif/1.0/typesandspecimen.xml.
Type	string
dcterms:isVersionOf	http://rs.gbif.org/terms/1.0/typeDesignationType

typeOfType
Title (Label)	Type Of Type
Namespace	dwc
Table	Material
Description	A category of nomenclatural type of a dwc:MaterialEntity.
Notes	The term dwc:typeOfType must be used in combination with dwc:typifiedName. Together they make up the type status of a specimen. Note that relatively very few specimens are nomenclatural types (types of names), so in most cases this term will have no value. Unlike dwc:typeStatus, dwc:typeOfType can only have a single value. Recommended best practice is to use a controlled vocabulary such as the GBIF Nomenclatural Type Status Vocabulary. This term has an equivalent in the tcs: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`holotype` `isotype`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/typeOfType

typifiedName
Title (Label)	Typified Name
Namespace	dwc
Table	Material
Description	A scientific name for which a specimen or other name is the type.
Notes	Recommended best practice is also to indicate the dwc:typeStatus of the specimen.
Examples	`Polysiphonia amphibolis Womersley`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/version/typifiedName

identifiedBy
Title (Label)	Identified By
Namespace	dwc
Table	Material
Description	A name for a dcterms:Agent responsible for making a dwc:Identification.
Notes	When used in the context of an eco:Survey, the subject consists of all of the dwc:Identifications related to the eco:Survey. Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Examples	`James L. Patton` `Theodore Pappenfuss \| Robert Macey`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identifiedBy

identifiedBy_fk
Title (Label)	Identified By (Foreign Key)
Namespace	dwc
Table	Material
Description	An identifier for a dcterms:Agent responsible for making a dwc:Identification.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identifiedByID

identifiedByID
Title (Label)	Identified By ID
Namespace	dwc
Table	Material
Description	An identifier for a dcterms:Agent responsible for making a dwc:Identification.
Notes	The value in this field MAY refer to a dcterms:Agent within or external to the dataset in which this record originated.
Examples	`https://orcid.org/0000-0002-1825-0097` (for an individual) `https://orcid.org/0000-0002-1825-0097 \| https://orcid.org/0000-0002-1825-0098` (for a list of people)
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identifiedByID

dateIdentified
Title (Label)	Date Identified
Namespace	dwc
Table	Material
Description	The date on which the subject was determined as representing the dwc:Taxon.
Notes	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/dateIdentified

identificationReferences
Title (Label)	Identification References
Namespace	dwc
Table	Material
Description	A list (concatenated and separated) of dcterms:BibliographicResources used in a dwc:Identification.
Notes	When used in the context of an eco:Survey, the subject consists of all of the dwc:Identifications related to the eco:Survey. Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Examples	`Aves del Noroeste Patagonico. Christie et al. 2004.` `Stebbins, R. Field Guide to Western Reptiles and Amphibians. 3rd Edition. 2003. \| Irschick, D.J. and Shaffer, H.B. (1997). The polytypic species revisited: Morphological differentiation among tiger salamanders (Ambystoma tigrinum) (Amphibia: Caudata). Herpetologica, 53(1), 30-49.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identificationReferences

identificationVerificationStatus
Title (Label)	Identification Verification Status
Namespace	dwc
Table	Material
Description	A categorical indicator of the extent to which a dwc:Identification has been verified to be correct.
Notes	Recommended best practice is to use a controlled vocabulary such as that used in HISPID and ABCD. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`0` (unverified in HISPID/ABCD)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identificationVerificationStatus

identificationRemarks
Title (Label)	Identification Remarks
Namespace	dwc
Table	Material
Description	Comments or notes about a dwc:Identification.
Examples	`Distinguished between Anthus correndera and Anthus hellmayri based on the comparative lengths of the uñas.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identificationRemarks

taxonID
Title (Label)	Taxon ID
Namespace	dwc
Table	Material
Description	An identifier for a dwc:Taxon.
Notes	In DwC-DP, the dwc:taxonID is always an external link to a taxon record. As such, if present, it should be a resolvable globally unique identifier. See the Identifiers section of https://github.com/CatalogueOfLife/coldp/blob/master/README.md.
Examples	`8fa58e08-08de-4ac1-b69c-1235340b7001` `32567` `https://www.gbif.org/species/212`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/taxonID

scientificNameID
Title (Label)	Scientific Name ID
Namespace	dwc
Table	Material
Description	An identifier for the nomenclatural (not taxonomic) details of a scientific name.
Notes	In DwC-DP, the dwc:scientificNameID is always an external link to a taxon record. As such, if present, it should be a resolvable globally unique identifier. See the Identifiers section of https://github.com/CatalogueOfLife/coldp/blob/master/README.md.
Examples	`urn:lsid:ipni.org:names:37829-1:1.3`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/scientificNameID

scientificName
Title (Label)	Scientific Name
Namespace	dwc
Table	Material
Description	A scientific name string, not including authorship, date or identification qualifiers.
Examples	`Coleoptera` (order) `Vespertilionidae` (family) `Manis` (genus) `Ctenomys sociabilis` (genus + specificEpithet) `Ambystoma tigrinum diaboli` (genus + specificEpithet + infraspecificEpithet) `Quercus agrifolia var. oxyadenia` (genus + specificEpithet + taxonRank + infraspecificEpithet) `×Agropogon littoralis` `Mentha ×smithiana` `Agrostis stolonifera L. × Polypogon monspeliensis`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/scientificName

scientificNameAuthorship
Title (Label)	Scientific Name Authorship
Namespace	dwc
Table	Material
Description	The authorship information for a dwc:scientificName formatted according to the conventions of the applicable dwc:nomenclaturalCode.
Examples	`(Torr.) J.T. Howell` `(Martinovský) Tzvelev` `(Györfi, 1952)`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/scientificNameAuthorship

vernacularName
Title (Label)	Vernacular Name
Namespace	dwc
Table	Material
Description	A common or vernacular name.
Examples	`Andean Condor` `death cap` `rainbow trout` `Smoky Quartz` `Amethyst` `Agate` `Tiger's Eye`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/vernacularName

taxonRank
Title (Label)	Taxon Rank
Namespace	dwc
Table	Material
Description	A taxonomic rank of the most specific name in a dwc:scientificName.
Notes	Recommended best practice is to use a controlled vocabulary. The taxon ranks of algae, fungi and plants are defined in the International Code of Nomenclature for algae, fungi, and plants (Shenzhen Code Articles H3.2, H4.4 and H.3.1).
Examples	`subspecies` `varietas` `forma` `species` `genus` `nothogenus` `nothospecies` `nothosubspecies`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/taxonRank

classificationSystem
Title (Label)	Classification System
Namespace	dc
Table	Material
Description	A reference to the classification system in which an authoritative name or formal classification belongs.
Notes	Recommended best practice is to provide a formal citation or IRI. This term should not be confused with dwc:namePublishedIn as a classification system is not equivalent to a publication in which a taxon is first described. This term should not be confused with dwc:nameAccordingTo as a classification system is not equivalent to a publication or other source in which a specific taxon concept circumscription is defined or implied. This term should not be confused with dwc:nomenclaturalCode as a classification system is not equivalent to code of nomenclature, which states the rules for naming rather than an organized source of names. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`Strunz, H., Nickel, E.H. (2001): Strunz Mineralogical Tables. Chemical-Structural Mineral Classification System. 9th edition. E. Schweizerbart’sche Verlagsbuchhandlung, Stuttgart, ix + 870 p. (ISBN 3-510-65188-X)` `Gaines, R.V., Skinner, H.C.W., Foord, E.E., Mason, B., Rosenzweig, A. (1997): Dana's New Mineralogy: The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana. 8th edition. John Wiley & Sons, New York, xlv + 1819 p. (ISBN 0-471-19310-0).` `https://kos.geospecimens.org/vocab/meteorite-classification` `Mammal Diversity Database. (2026). Mammal Diversity Database (Version 2.5) [Data set]. [Zenodo](https://zenodo.org/records/10595931). https://doi.org/10.5281/zenodo.17033774` `Index Fungorum. (2026). Index Fungorum electronic database. Royal Botanic Gardens, Kew. Retrieved August 17, 2026, from indexfungorum.org.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/classificationSystem

modified
Title (Label)	Modified
Namespace	dcterms
Table	Material
Description	Date on which the resource was changed.
Notes	Date that the digital record of the material resource was altered. The date and time MUST comply with the World Wide Web Consortium (W3C) datetime practice, https://www.w3.org/TR/NOTE-datetime, which requires that date and time representation correspond to ISO 8601:1998, https://www.iso.org/standard/40874.html, but with year fields always comprising 4 digits. This makes datetime records compliant with 8601:2004. AC datetime values MAY also follow 8601:2004 for ranges by separating two ISO 8601 datetime fields by a solidus ("forward slash", '/'). dcterms:modified permits all modification dates to be recorded, or if only one is recorded, it is assumed to be the latest. See also the Wikipedia ISO 8601 entry, https://en.wikipedia.org/wiki/ISO_8601, for further explanation and examples.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/modified

provenance_fk
Title (Label)	Provenance (Foreign Key)
Namespace	dcterms
Table	Material
Description	An identifier for a dwc:Provenance.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/provenanceID

usagePolicy_fk
Title (Label)	Usage Policy (Foreign Key)
Namespace	dcterms
Table	Material
Description	An identifier for a dwc:UsagePolicy.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/usagePolicyID

owner
Title (Label)	Owner
Namespace	xmprights
Table	Material
Description	A list of legal owners of the resource.
Notes	`unknown`
Examples	`The names of the owners `Ron Thomas, Roz Thomas` or a URI that identifies the owner`
Type	string
dcterms:isVersionOf	http://ns.adobe.com/xap/1.0/rights/Owner

owner_fk
Title (Label)	Owner (Foreign Key)
Namespace	dwc
Table	Material
Description	An identifier for a dcterms:Agent that is the owner of the ac:Media resource.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

license
Title (Label)	License
Namespace	dcterms
Table	Material
Description	A legal document giving official permission to do something with the resource.
Notes	Recommended practice is to identify the license document with a URI. If this is not possible or feasible, a literal value that identifies the license may be provided.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/license

informationWithheld
Title (Label)	Information Withheld
Namespace	dwc
Table	Material
Description	Additional information that exists about a resource, but that is not shared publicly. Suggests that alternative data of higher quality may be available on request.
Examples	`location information not given for endangered species` `collector identities withheld \| ask about tissue samples`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/informationWithheld

dataGeneralizations
Title (Label)	Data Generalizations
Namespace	dwc
Table	Material
Description	Actions taken to make the shared data less specific or complete than in its original form. Suggests that alternative data of higher quality may be available on request.
Examples	`Coordinates generalized from original GPS coordinates to the nearest half degree grid cell.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/dataGeneralizations

feedbackURL
Title (Label)	Feedback URL
Namespace	dwc
Table	Material
Description	A uniform resource locator (URL) that points to a webpage on which a form may be submitted to gather feedback about the record.
Notes	Recommended best practice is to optionally include query strings that act to pre-populate web page form elements and communicate the context.
Examples	`https://example.com/new?title=New+issue&body=This+comment+is+about+CAN12345`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/feedbackURL

Material Agent Role

Identifier: http://rs.tdwg.org/dwc-dp/1.0/material-agent-role

Description: A role filled by a dcterms:Agent with respect to a dwc:MaterialEntity.

dcterms:isVersionOf: http://example.com/term-pending//material-agent-role

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
materialEntity_fk	role for	material	materialEntity_pk	foreign key	Yes	Yes
agent_fk	role holder	agent	agent_pk	foreign key	Yes	Yes

materialEntity_fk
Title (Label)	Material Entity (Foreign Key)
Namespace	dwc
Table	Material Agent Role
Description	An identifier for a dwc:MaterialEntity.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/materialEntityID

agent_fk
Title (Label)	Agent (Foreign Key)
Namespace	dwc
Table	Material Agent Role
Description	An identifier for a dcterms:Agent.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

agentRole
Title (Label)	Agent Role
Namespace	dwc
Table	Material Agent Role
Description	A category that best matches the nature of a role of a dcterms:Agent.
Notes	Recommended best practice is to use a controlled vocabulary for the roles appropriate to the class of resource a dcterms:AgentRole is related to.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResource

agentRoleIRI
Title (Label)	Agent Role IRI
Namespace	dwciri
Table	Material Agent Role
Description	An IRI of the controlled vocabulary value for a role of a dcterms:Agent.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResourceID

agentRoleSource
Title (Label)	Agent Role Source
Namespace	dc
Table	Material Agent Role
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:agentRole is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

agentRoleOrder
Title (Label)	Agent Role Order
Namespace	dwc
Table	Material Agent Role
Description	A numerical position of an AgentRole in a set of AgentRoles that have the same combination of agentRole, agentRoleIRI, agentRoleSource and related target identifier.
Notes	One could use dwc:agentRoleOrder to create an ordered list of collectors (dwc:agentRole = 'collector') for a dwc:MaterialEntity, for example. The first would have dwc:agentRoleOrder=1, the second would have dwc:agentRoleOrder=2.
Type	integer
Constraints	{"required": true, "minimum": 1}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentRoleOrder

agentRoleDate
Title (Label)	Agent Role Date
Namespace	dwc
Table	Material Agent Role
Description	An interval during which a dcterms:AgentRole was in effect.
Notes	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionEffectiveDate

Material Assertion

Identifier: http://rs.tdwg.org/dwc-dp/1.0/material-assertion

Description: A dwc:Assertion made by a dcterms:Agent about a dwc:MaterialEntity.

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/MeasurementOrFact

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
assertionID				weak primary key	No	No
materialEntity_fk	about	material	materialEntity_pk	foreign key	Yes	Yes
assertionBy_fk	asserted by	agent	agent_pk	foreign key	Yes	No
assertionByID	asserted by	agent	agentID	weak foreign key	No	No
assertionProtocol_fk	followed	protocol	protocol_pk	foreign key	Yes	No

assertionID
Title (Label)	Assertion ID
Namespace	dwc
Table	Material Assertion
Description	An identifier for a dwc:Assertion.
Notes	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": true}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionID

materialEntity_fk
Title (Label)	Material Entity (Foreign Key)
Namespace	dwc
Table	Material Assertion
Description	An identifier for a dwc:MaterialEntity.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/materialEntityID

verbatimAssertionType
Title (Label)	Verbatim Assertion Type
Namespace	dwc
Table	Material Assertion
Description	A string representing the type of dwc:Assertion as it appeared in the original record.
Notes	This term is meant to allow the capture of an unaltered original name for a dwc:assertionType. This term is meant to be used in addition to dwc:assertionType, not instead of it.
Examples	`water_temp` `Fish biomass` `sampling net mesh size`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/verbatimAssertionType

assertionType
Title (Label)	Assertion Type
Namespace	dwc
Table	Material Assertion
Description	A category that best matches the nature of a dwc:Assertion.
Notes	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`tail length` `temperature` `trap line length` `survey area` `trap type`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionType

assertionTypeIRI
Title (Label)	Assertion Type IRI
Namespace	dwciri
Table	Material Assertion
Description	An IRI of a controlled vocabulary value for a type of dwc:Assertion.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/iri/measurementType

assertionTypeSource
Title (Label)	Assertion Type Source
Namespace	dc
Table	Material Assertion
Description	A reference to the controlled vocabulary in which the definition of a value in dwc:assertionType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionMadeDate
Title (Label)	Assertion Made Date
Namespace	dwc
Table	Material Assertion
Description	A date on which a dwc:Assertion was created.
Notes	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionMadeDate

assertionEffectiveDate
Title (Label)	Assertion Effective Date
Namespace	dwc
Table	Material Assertion
Description	A date-time or time interval during which an asserted state or measurement was deemed to be in effect.
Notes	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionEffectiveDate

assertionValue
Title (Label)	Assertion Value
Namespace	dwc
Table	Material Assertion
Description	An asserted value.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionValue

assertionValueIRI
Title (Label)	Assertion Value IRI
Namespace	dwciri
Table	Material Assertion
Description	An IRI of the controlled vocabulary value for a value of a dwc:Assertion.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/iri/measurementValue

assertionValueSource
Title (Label)	Assertion Value Source
Namespace	dc
Table	Material Assertion
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:assertionValue is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionUnit
Title (Label)	Assertion Unit
Namespace	dwc
Table	Material Assertion
Description	Unit associated with the value in dwc:assertionValue.
Notes	Recommended best practice is to use a controlled vocabulary such as the Ontology of Units of Measure http://www.wurvoc.org/vocabularies/om-1.8/ of SI units, derived units, or other non-SI units accepted for use within the SI. For units that are composed of multiple parts, use the patterns as given in "A Primer for Communicating Mathematics via Plain Text" (https://cse.sc.edu/~fenner/latex-ASCII.pdf) by Stephen Fenner (e.g., `g/cm^3` for grams per cubic centimeter). For other units, provide the value as a recognizable standard (e.g., '%') or written out in full and in the plural (e.g., `individuals`). It is fine to provide non-SI units in the original language of the dataset.
Examples	`m` `s` `g` `ml`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionUnit

assertionUnitIRI
Title (Label)	Assertion Unit IRI
Namespace	dwciri
Table	Material Assertion
Description	An IRI of a controlled vocabulary value for the unit of a dwc:assertionValue.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/iri/assertionUnit

assertionUnitSource
Title (Label)	Assertion Unit Source
Namespace	dc
Table	Material Assertion
Description	A reference to a controlled vocabulary in which the definition of the value in dwc:assertionUnit is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionError
Title (Label)	Assertion Error
Namespace	dwc
Table	Material Assertion
Description	A description of the potential error associated with a dwc:assertionValue.
Examples	`0.01` `normal distribution with variation of 2 m`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionError

assertionBy
Title (Label)	Assertion By
Namespace	dwc
Table	Material Assertion
Description	A list (concatenated and separated) of names of dcterms:Agents responsible for making a dwc:Assertion.
Notes	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionBy

assertionBy_fk
Title (Label)	Assertion By (Foreign Key)
Namespace	dwc
Table	Material Assertion
Description	An identifier for a dcterms:Agent responsible for making a dwc:Assertion.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

assertionByID
Title (Label)	Assertion By ID
Namespace	dwc
Table	Material Assertion
Description	An identifier for a dcterms:Agent responsible for making a dwc:Assertion.
Notes	The value in this field MAY refer to a dcterms:Agent within or external to the dataset in which this record originated.
Examples	`https://orcid.org/0000-0002-1825-0097`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

assertionProtocols
Title (Label)	Assertion Protocols
Namespace	dwc
Table	Material Assertion
Description	Names of, references to, or descriptions of dwc:Protocols used in making a dwc:Assertion.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionProtocols

assertionProtocol_fk
Title (Label)	Assertion Protocol (Foreign Key)
Namespace	dwc
Table	Material Assertion
Description	An identifier for a dwc:Protocol used to make a dwc:Assertion.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/protocolID

assertionReferences
Title (Label)	Assertion References
Namespace	dwc
Table	Material Assertion
Description	A list (concatenated and separated) of dcterms:BibliographicResources associated with a dwc:Assertion.
Notes	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionReferences

assertionRemarks
Title (Label)	Assertion Remarks
Namespace	dwc
Table	Material Assertion
Description	Comments or notes about a dwc:Assertion.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionRemarks

Material Geological Context

Identifier: http://rs.tdwg.org/dwc-dp/1.0/material-geological-context

Description: A dwc:GeologicalContext from which a dwc:MaterialEntify was derived.

Notes: Use this table to establish one or more GeologicalContexts represented in a dwc:MaterialEntity.

dcterms:isVersionOf: http://example.com/term-pending//material-geological-context

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
geologicalContext_fk	within	geological-context	geologicalContext_pk	foreign key	Yes	Yes
materialEntity_fk	for	material	materialEntity_pk	foreign key	Yes	Yes

geologicalContext_fk
Title (Label)	Geological Context (Foreign Key)
Namespace	dwc
Table	Material Geological Context
Description	An identifier for a dwc:GeologicalContext.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/geologicalContextID

materialEntity_fk
Title (Label)	Material Entity (Foreign Key)
Namespace	dwc
Table	Material Geological Context
Description	An identifier for a dwc:MaterialEntity.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/materialEntityID

Material Identifier

Identifier: http://rs.tdwg.org/dwc-dp/1.0/material-identifier

Description: An adms:Identifier for a dwc:MaterialEntity.

Notes: An important point to note is that properties of the adms:Identifier class are properties of the Identifier, not the resource that it identifies or the agency that issued it.

dcterms:isVersionOf: http://www.w3.org/ns/adms#Identifier

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
materialEntity_fk	for	material	materialEntity_pk	foreign key	Yes	Yes

materialEntity_fk
Title (Label)	Material Entity (Foreign Key)
Namespace	dwc
Table	Material Identifier
Description	An identifier for a dwc:MaterialEntity.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/materialEntityID

identifier
Title (Label)	Identifier
Namespace	skos
Table	Material Identifier
Description	An unambiguous reference to a resource within a given context.
Notes	Recommended best practice is to identify a resource by means of a string conforming to a formal identification system.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://www.w3.org/2004/02/skos/core#notation

identifierType
Title (Label)	Identifier Type
Namespace	dc
Table	Material Identifier
Description	A category or system that best matches the nature of an identifier (skos:notation).
Notes	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/type

identifierTypeIRI
Title (Label)	Identifier Type IRI
Namespace	dcterms
Table	Material Identifier
Description	An IRI of a controlled vocabulary value for a type of identifier.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/type

identifierTypeSource
Title (Label)	Identifier Type Source
Namespace	dc
Table	Material Identifier
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:identifierType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

identifierLanguage
Title (Label)	Identifier Language
Namespace	dc
Table	Material Identifier
Description	A language in which an identifier is presented.
Notes	Recommended best practice is to use an ISO639-2 three-letter language code.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/language

Material Media

Identifier: http://rs.tdwg.org/dwc-dp/1.0/material-media

Description: A dwc:MaterialEntity as content in an ac:Media entity.

dcterms:isVersionOf: http://example.com/term-pending//material-media

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
media_fk	this media instance	media	media_pk	foreign key	Yes	Yes
materialEntity_fk	about	material	materialEntity_pk	foreign key	Yes	Yes

media_fk
Title (Label)	Media (Foreign Key)
Namespace	dcterms
Table	Material Media
Description	An identifier for an ac:Media resource.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://purl.org/dc/terms/identifier

materialEntity_fk
Title (Label)	Material Entity (Foreign Key)
Namespace	dwc
Table	Material Media
Description	An identifier for a dwc:MaterialEntity.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/materialEntityID

subjectCategory
Title (Label)	Subject Category
Namespace	ac
Table	Material Media
Description	A term to describe the content of a image or a region of interest within an image using a controlled value string.
Notes	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/CVtermLiteral

subjectCategoryIRI
Title (Label)	Subject Category IRI
Namespace	Iptc4xmpExt
Table	Material Media
Description	An IRI of a controlled vocabulary value for the subject category of an ac:Media resource.
Notes	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://iptc.org/std/Iptc4xmpExt/2008-02-29/CVterm

subjectCategoryVocabulary
Title (Label)	Subject Category Source
Namespace	ac
Table	Material Media
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:subjectCategory is given.
Notes	The Audiovisual Core recommended vocabularies do not need to be cited here. There is no required linkage between individual Subject Category terms and the vocabulary; the mechanism is intended to support discovery of the normative URI for a term, but not guarantee it.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectCategoryVocabulary

subjectPartLiteral
Title (Label)	Subject Part Literal
Namespace	ac
Table	Material Media
Description	The portion or product of organism morphology, behaviour, environment, etc. that is either predominantly shown or particularly well exemplified by the ac:Media resource, denoted by a controlled value string.
Notes	Values SHOULD be selected from the Controlled Vocabulary for ac:subjectPart. It is best practice to use ac:subjectPart instead of ac:subjectPartLiteral whenever practical.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectPartLiteral

subjectPart
Title (Label)	Subject Part
Namespace	ac
Table	Material Media
Description	The portion or product of organism morphology, behaviour, environment, etc. that is either predominantly shown or particularly well exemplified by the ac:Media resource, denoted by an IRI.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectPart

subjectOrientationLiteral
Title (Label)	Subject Orientation Literal
Namespace	ac
Table	Material Media
Description	Specific orientation (= direction, view angle) of the subject represented in the ac:Media resource with respect to the acquisition device, denoted by a controlled value string.
Notes	Values SHOULD be selected from the Controlled Vocabulary for ac:subjectOrientation. It is best practice to use ac:subjectOrientation instead of ac:subjectOrientationLiteral whenever practical.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectOrientationLiteral

subjectOrientation
Title (Label)	Subject Orientation
Namespace	ac
Table	Material Media
Description	Specific orientation (= direction, view angle) of the subject represented in the ac:Media resource with respect to the acquisition device.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectOrientation

physicalSetting
Title (Label)	Physical Setting
Namespace	ac
Table	Material Media
Description	The setting of the content represented in an ac:Media resource, such as images, sounds, and movies if the provider deems them relevant.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/physicalSetting

Material Protocol

Identifier: http://rs.tdwg.org/dwc-dp/1.0/material-protocol

Description: A dwc:Protocol used for a dwc:MaterialEntity.

dcterms:isVersionOf: http://example.com/term-pending//material-protocol

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
protocol_fk	followed	protocol	protocol_pk	foreign key	Yes	Yes
materialEntity_fk	used for	material	materialEntity_pk	foreign key	Yes	Yes

protocol_fk
Title (Label)	Protocol (Foreign Key)
Namespace	dwc
Table	Material Protocol
Description	An identifier for a dwc:Protocol.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/protocolID

materialEntity_fk
Title (Label)	Material Entity (Foreign Key)
Namespace	dwc
Table	Material Protocol
Description	An identifier for a dwc:MaterialEntity.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/materialEntityID

Material Provenance

Identifier: http://rs.tdwg.org/dwc-dp/1.0/material-provenance

Description: A dwc:Provenance for a dwc:MaterialEntity.

dcterms:isVersionOf: http://example.com/term-pending//material-provenance

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
provenance_fk	has	provenance	provenance_pk	foreign key	Yes	Yes
materialEntity_fk	for	material	materialEntity_pk	foreign key	Yes	Yes

provenance_fk
Title (Label)	Provenance (Foreign Key)
Namespace	dcterms
Table	Material Provenance
Description	An identifier for a dwc:Provenance.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/provenanceID

materialEntity_fk
Title (Label)	Material Entity (Foreign Key)
Namespace	dwc
Table	Material Provenance
Description	An identifier for a dwc:MaterialEntity.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/materialEntityID

Material Reference

Identifier: http://rs.tdwg.org/dwc-dp/1.0/material-reference

Description: A dcterms:BibliographicResource related to a dwc:MaterialEntity.

dcterms:isVersionOf: http://example.com/term-pending//material-reference

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
reference_fk	mentioned in	bibliographic-resource	reference_pk	foreign key	Yes	No
materialEntity_fk	mentioned	material	materialEntity_pk	foreign key	Yes	Yes

reference_fk
Title (Label)	Reference (Foreign Key)
Namespace	dwc
Table	Material Reference
Description	An identifier for a dcterms:BibliographicResource.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/referenceID

materialEntity_fk
Title (Label)	Material Entity (Foreign Key)
Namespace	dwc
Table	Material Reference
Description	An identifier for a dwc:MaterialEntity.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/materialEntityID

relationshipType
Title (Label)	Relationship Type
Namespace	dwc
Table	Material Reference
Description	A relationship of a subject resource to a dcterms:BibliographicResource.
Notes	Recommended best practice is to use a controlled vocabulary.
Examples	`cited in` `referenced`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResource

Material Usage Policy

Identifier: http://rs.tdwg.org/dwc-dp/1.0/material-usage-policy

Description: Rights, usage, and attribution statements applicable to a dwc:MaterialEntity.

dcterms:isVersionOf: http://example.com/term-pending//material-usage-policy

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
materialEntity_fk	for	material	materialEntity_pk	foreign key	Yes	Yes
usagePolicy_fk	has	usage-policy	usagePolicy_pk	foreign key	Yes	Yes

materialEntity_fk
Title (Label)	Material Entity (Foreign Key)
Namespace	dwc
Table	Material Usage Policy
Description	An identifier for a dwc:MaterialEntity.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/materialEntityID

usagePolicy_fk
Title (Label)	Usage Policy (Foreign Key)
Namespace	dcterms
Table	Material Usage Policy
Description	An identifier for a dwc:UsagePolicy.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/usagePolicyID

Media

Identifier: http://rs.tdwg.org/dwc-dp/1.0/media

Description: A digital or physical media resource.

Notes: An instance of digital textual media may be better represented as a dcterms:BibliographicResource.

Examples:

`dcmi:Sound`

`dcmi:StillImage`

`dcmi:MovingImage`

`dcmi:InteractiveResource`

`ac:Digital3DResource`

dcterms:isVersionOf: http://rs.tdwg.org/ac/terms/Media

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
media_pk				primary key	Yes	Yes
mediaID				weak primary key	No	No
derivedFromMedia_fk	derived from	media	media_pk	foreign key	Yes	No
derivedFromMediaID	derived from	media	mediaID	weak foreign key	No	No
isPartOfMedia_fk	part of	media	media_pk	foreign key	Yes	No
isPartOfMediaID	part of	media	mediaID	weak foreign key	No	No
commenter_fk	comment by	agent	agent_pk	foreign key	Yes	No
commenterID	comment by	agent	agentID	weak foreign key	No	No
reviewer_fk	reviewed by	agent	agent_pk	foreign key	Yes	No
reviewerID	reviewed by	agent	agentID	weak foreign key	No	No
provenance_fk	has	provenance	provenance_pk	foreign key	Yes	No
usagePolicy_fk	has	usage-policy	usagePolicy_pk	foreign key	Yes	No
owner_fk	owned by	agent	agent_pk	foreign key	Yes	No

media_pk
Title (Label)	Media (Primary Key)
Namespace	dcterms
Table	Media
Description	A unique identifier for an ac:Media resource.
Notes	The value in this field MAY be changed in aggregation to guarantee uniqueness.
Type	string
Constraints	{"required": true, "unique": true}
dcterms:isVersionOf	http://purl.org/dc/terms/identifier

mediaID
Title (Label)	Media ID
Namespace	dcterms
Table	Media
Description	An identifier for an ac:Media resource.
Notes	The value in this field MUST be preserved in aggregation. Recommended best practice is to use a globally unique identifier.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/identifier

derivedFromMedia_fk
Title (Label)	Derived From Media (Foreign Key)
Namespace	dcterms
Table	Media
Description	An identifier for an ac:Media resource from which this ac:Media resource was derived.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://purl.org/dc/terms/identifier

derivedFromMediaID
Title (Label)	Derived From Media ID
Namespace	dcterms
Table	Media
Description	An identifier for an ac:Media resource from which this ac:Media resource was derived.
Notes	This term can be used when an ac:Media resource has been separated from its source ac:Media resource. Recommended best practice is to use a globally unique identifier. The value in this field MAY refer to an ac:Media instance within or external to the dataset in which this record originated.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://purl.org/dc/terms/identifier

isPartOfMedia_fk
Title (Label)	Is Part Of Media (Foreign Key)
Namespace	dcterms
Table	Media
Description	An identifier for an ac:Media resource of which this ac:Media resource is a part.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/isROIOf

isPartOfMediaID
Title (Label)	Is Part Of Media ID
Namespace	ac
Table	Media
Description	An identifier for an ac:Media resource of which this ac:Media resource is a part.
Notes	This term can be used to define an ac:RegionOfInterest within an ac:Media resource. Recommended best practice is to use a globally unique identifier. The value in this field MAY refer to an ac:Media instance within or external to the dataset in which this record originated.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/isROIOf

mediaType
Title (Label)	Media Type
Namespace	dcterms
Table	Media
Description	A category that best matches the nature of an ac:Media resource.
Notes	Recommended best practice is to use a globally unique identifier.
Examples	`Sound` `StillImage` `MovingImage` `InteractiveResource` `Text`
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/type

title
Title (Label)	Title
Namespace	dcterms
Table	Media
Description	A name given to the resource.
Notes	Concise title, name, or brief descriptive label of institution, resource collection, or individual resource. This field SHOULD include the complete title with all the subtitles, if any. It is strongly suggested to provide a title. The title facilitates interactions with humans: e.g., it could be used as display text of hyperlinks or to provide a choice of images in a pick list. The title is therefore highly useful and an effort should be made to provide it where it is not already available. When the resource is a collection without an institutional or official name, but with a thematic content, a descriptive title, e.g., "Urban Ants of New England," would be suitable. In individual media resources depicting taxa, the scientific name or names of taxa often form a good title. Common names in addition to or instead of scientific names are also acceptable. Indications of action or roles captured by the media resource, such as predatory acts, are desirable ("Rattlesnake eating deer mouse", "Pollinators of California Native Plants").
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/title

description
Title (Label)	Description
Namespace	dcterms
Table	Media
Description	An account of the resource.
Notes	Description of collection or individual resource, containing the Who, What, When, Where and Why as free-form text. This property optionally allows the presentation of detailed information and will in most cases be shown together with the resource title. If both a description and a caption are present in the metadata, a description is typically displayed instead of the resource, whereas a caption is displayed together with the resource. The description should aim to be a good proxy for the underlying media resource in cases where only text can be shown, whereas the caption may only make sense when shown together with the media. Thus, in HTML it would be appropriate to use dcterms:description values for alt attributes in img elements. Often only one of description or caption is present; choose the term most appropriate for your metadata. It is the role of implementers of an AC concrete representation (e.g., an XML Schema, an RDF representation, etc.) to decide and document how formatting advice will be represented in descriptions serialized according to such representations.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/description

caption
Title (Label)	Caption
Namespace	ac
Table	Media
Description	Free-form text to be displayed together with (rather than instead of) a resource that is suitable for captions (especially images).
Notes	If both description and caption are present in the metadata, a description is typically displayed instead of the resource, a caption together with the resource. Thus, in HTML it would be appropriate to use ac:caption values in figcaption elements. Often only one of description or caption is present; choose the term most appropriate for your metadata.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/caption

subtypeLiteral
Title (Label)	Subtype Literal
Namespace	ac
Table	Media
Description	A subcategory that allows further specialization of an ac:Media resource type than mediaType.
Notes	The subtypeLiteral term MUST NOT be applied to Collection objects. However, the Description term in the Content Coverage Vocabulary might add further description to a Collection object. Controlled string values SHOULD be selected from the Controlled Vocabulary for ac:subtype. Human-readable information about the Controlled Vocabulary for ac:subtype is at http://rs.tdwg.org/ac/doc/subtype/. It is best practice to use ac:subtype instead of ac:subytpeLiteral whenever practical.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subtypeLiteral

subtypeIRI
Title (Label)	Subtype IRI
Namespace	ac
Table	Media
Description	A class, represented by an IRI, that provides for more specialization of an ac:Media resource type than dcterms:type.
Notes	The subtype term MUST NOT be applied to Collection objects. However, the Description term in the Content Coverage Vocabulary might add further description to a Collection object. IRI values SHOULD be selected from the Controlled Vocabulary for ac:subtype. Human-readable information about the Controlled Vocabulary for ac:subtype is at http://rs.tdwg.org/ac/doc/subtype/. In text-based systems such as tables, IRI values MUST be in unabbreviated form. When an appropriate subtype is not available in the Audiovisual Core controlled vocabulary, a term IRI that is not in a TDWG namespace MAY be used. Conforming applications MAY choose to ignore controlled values not issued by Audiovisual Core. See ac:subtypeLiteral for usage with strings.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subtype

collectionCode
Title (Label)	Collection Code
Namespace	dwc
Table	Media
Description	A name, acronym, coden, or initialism identifying a collection.
Examples	`Mammals` `Hildebrandt` `EBIRD` `VP`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/collectionCode

collectionID
Title (Label)	Collection ID
Namespace	dwc
Table	Media
Description	An identifier for a collection.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/collectionID

createDate
Title (Label)	Original Date and Time
Namespace	xmp
Table	Media
Description	The date and time the resource was created. For a digital file, this need not match a file-system creation time. For a freshly created resource, it should be close to that time, modulo the time taken to write the file. Later file transfer, copying, and so on, can make the file-system time arbitrarily different.
Notes	The date of the creation of the original resource from which the digital media was derived or created. The date and time MUST comply with the World Wide Web Consortium (W3C) datetime practice, https://www.w3.org/TR/NOTE-datetime, which requires that date and time representation correspond to ISO 8601:1998, but with year fields always comprising 4 digits. This makes datetime records compliant with 8601:2004, https://www.iso.org/standard/40874.html. AC datetime values MAY also follow 8601:2004 for ranges by separating two ISO 8601 datetime fields by a solidus ("forward slash", '/'). When applied to a media resource with temporal extent such as audio or video, this property indicates the startTime of the recording. What constitutes "original" is determined by the metadata author. Example: Digitization of a photographic slide of a map would normally give the date at which the map was created; however a photographic work of art including the same map as its content may give the date of the original photographic exposure. Imprecise or unknown dates can be represented as ISO dates or ranges. Compare also Date and Time Digitized in the Resource Creation Vocabulary. See also the Wikipedia ISO 8601 entry, https://en.wikipedia.org/wiki/ISO_8601, for further explanation and examples.
Type	string
dcterms:isVersionOf	http://ns.adobe.com/xap/1.0/CreateDate

timeOfDay
Title (Label)	Time Of Day
Namespace	ac
Table	Media
Description	Free text information beyond exact clock times.
Examples	`afternoon` `twilight`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/timeOfDay

digitizationDate
Title (Label)	Digitization Date
Namespace	ac
Table	Media
Description	A date on which the first digital version of a resource was created, if different from xmp:CreateDate.
Notes	The date and time MUST comply with the World Wide Web Consortium (W3C) datetime practice, https://www.w3.org/TR/NOTE-datetime, which requires that date and time representation correspond to ISO 8601:1998, but with year fields always comprising 4 digits. This makes datetime records compliant with 8601:2004, https://www.iso.org/standard/40874.html. AC datetime values MAY also follow 8601:2004 for ranges by separating two ISO 8601 datetime fields by a solidus ("forward slash", '/'). Use the international (ISO/xml) format yyyy-mm-ddThh:mm (e.g., "2007-12-31" or "2007-12-31T14:59"). Where available, timezone information SHOULD be added. This is often not the media creation or modification date. For example, if photographic prints have been scanned, the date of that scanning is what this term carries, but Original Date and Time is that depicted in the print. In the case of digital images containing EXIF, whereas the EXIF capture date does not contain time zone information, but EXIF GPSDateStamp and GPSTimeStamp may be relevant as these include time-zone information. See also Metadata Working Group Guidelines for Handling Image Metadata, Version 2.0 (November 2010), https://web.archive.org/web/20180919181934/http://www.metadataworkinggroup.org/pdf/mwg_guidance.pdf, which has best practice advice on handling time-zone-less EXIF date/time data. See also the Wikipedia ISO 8601 entry, https://en.wikipedia.org/wiki/ISO_8601, for further explanation and examples.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/digitizationDate

captureDevice
Title (Label)	Capture Device
Namespace	ac
Table	Media
Description	Free form text describing the device or devices used to create the resource.
Notes	It is best practice to record the device; this may include a combination such as camera plus lens, or camera plus microscope. Examples: "Canon Supershot 2000", "Makroscan Scanner 2000", "Zeiss Axioscope with Camera IIIu", "SEM (Scanning Electron Microscope)".
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/captureDevice

frameRate
Title (Label)	Frame Rate
Namespace	ac
Table	Media
Description	The decimal fraction representing the frequency (rate) at which consecutive images (frames) were captured in real time for a dcmi:MovingImage, expressed as the number of frames per second.
Notes	This term represents the rate at which consecutive images were captured in real time, not the rate at which the media is encoded to play back the recording. For example, in a recording where 60 consecutive images (frames) are captured for each second of the real-time recording, this would be 60. In a time-lapse recording where one image (frame) is recorded every 5 seconds of recording, this would be 0.2.
Examples	`60` `0.2`
Type	number
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/frameRate

resourceCreationTechnique
Title (Label)	Resource Creation Technique
Namespace	ac
Table	Media
Description	Information about technical aspects of the creation and digitization process of the resource. This includes modification steps ("retouching") after the initial resource capture.
Notes	Annotating whether and how a resource has been modified or edited significantly in ways that are not immediately obvious to, or expected by, consumers is of special significance. Examples for images are: Removing a distracting twig from a picture, moving an object to a different surrounding, changing the color in parts of the image, or blurring the background of an image. Modifications that are standard practice and expected or obvious are not necessary to document; examples of such practices include changing resolution, cropping, minor sharpening or overall color correction, and clearly perceptible modifications (e.g., addition of arrows or labels, or the placement of multiple pictures into a table.) If it is only known that significant modifications were made, but no details are known, a general statement like "Media may have been manipulated to improve appearance" may be appropriate. See also Subject Preparation Technique. Encoding method or settings, numbers of channels, lighting, frames per second, data rate, interlaced or progressive, multiflash lighting, remote control, automatic interval exposure.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/resourceCreationTechnique

sample-rate
Title (Label)	Sample Rate
Namespace	mo
Table	Media
Description	Associates a digital signal to its sample rate.
Notes	Numeric value in hertz (Hz). For example, a Service Access Point may have a specific resolution, quality, or format. “Sample rate” is distinct from the related concept of “bit rate” for compressed files such as MP3, and is applicable to both uncompressed and compressed files. See http://musicontology.com/specification/#term-sample_rate for additional information.
Type	number
dcterms:isVersionOf	http://purl.org/ontology/mo/sample_rate

modified
Title (Label)	Modified
Namespace	dcterms
Table	Media
Description	Date on which the resource was changed.
Notes	Date that the media resource was altered. The date and time MUST comply with the World Wide Web Consortium (W3C) datetime practice, https://www.w3.org/TR/NOTE-datetime, which requires that date and time representation correspond to ISO 8601:1998, https://www.iso.org/standard/40874.html, but with year fields always comprising 4 digits. This makes datetime records compliant with 8601:2004. AC datetime values MAY also follow 8601:2004 for ranges by separating two ISO 8601 datetime fields by a solidus ("forward slash", '/'). dcterms:modified permits all modification dates to be recorded, or if only one is recorded, it is assumed to be the latest. See also the Wikipedia ISO 8601 entry, https://en.wikipedia.org/wiki/ISO_8601, for further explanation and examples.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/modified

language
Title (Label)	Language
Namespace	dc
Table	Media
Description	A language of the resource.
Notes	URI from the ISO639-2 list of URIs for ISO 3-letter language codes, http://id.loc.gov/vocabulary/iso639-2. An image may contain language such as superimposed labels. If an image is of a natural scene or organism, without any language included, the resource is language-neutral with URI http://id.loc.gov/vocabulary/iso639-2/zxx corresponding to ISO ISO639-2 code "zxx". Resources with present but unknown language are to be coded as undetermined, with URI http://id.loc.gov/vocabulary/iso639-2/und corresponding to ISO639-2 code "und". Regional dialects or other special cases should conform to the ISO639-5 Alpha-3 Code for Language Families and Groups, http://id.loc.gov/vocabulary/iso639-5.html, where possible or the IETF Best Practices for Tags Identifying Languages, https://tools.ietf.org/html/rfc5646, where not. See also the entry for dc:language in the Audiovisual Core term list document and see the DCMI FAQ on DC and DCTERMS Namespaces, https://web.archive.org/web/20171126043657/https://github.com/dcmi/repository/blob/master/mediawiki_wiki/FAQ/DC_and_DCTERMS_Namespaces.md, for discussion of the rationale for terms in two namespaces. Normal practice is to use the same Label if both are provided. Labels have no effect on information discovery and are only suggestions.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/language

languageIRI
Title (Label)	Language IRI
Namespace	dcterms
Table	Media
Description	A language of the resource.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/language

metadataDate
Title (Label)	Metadata Date
Namespace	xmp
Table	Media
Description	The date and time that any metadata for this resource was last changed. It should be the same as or more recent than dcterms:modified.
Notes	Point in time recording when the last modification to metadata (not necessarily the media object itself) occurred. The date and time MUST comply with the World Wide Web Consortium (W3C) datetime practice, https://www.w3.org/TR/NOTE-datetime, which requires that date and time representation correspond to ISO 8601:1998, but with year fields always comprising 4 digits. This makes datetime records compliant with 8601:2004, https://www.iso.org/standard/40874.html. AC datetime values MAY also follow 8601:2004 for ranges by separating two ISO 8601 datetime fields by a solidus ("forward slash", '/'). This is not dcterms:modified, which refers to the resource itself rather than its metadata. See also the Wikipedia ISO 8601 entry, https://en.wikipedia.org/wiki/ISO_8601, for further explanation and examples.
Type	string
dcterms:isVersionOf	http://ns.adobe.com/xap/1.0/MetadataDate

metadataLanguageLiteral
Title (Label)	Metadata Language Literal
Namespace	ac
Table	Media
Description	Language of description and other metadata (but not necessarily of the image itself) represented as an ISO639-2 three letter language code.
Notes	ISO639-1 two-letter codes are permitted but deprecated. At least one of ac:metadataLanguage and ac:metadataLanguageLiteral MUST be supplied but, when feasible, supplying both might make the metadata more widely useful. They MUST specify the same language. In case of ambiguity, ac:metadataLanguage prevails. This is NOT dc:language, which is about the resource, not the metadata. Metadata Language is deliberately single-valued, imposing on unstructured serializations a requirement that multi-lingual metadata be represented as separate, complete, metadata records. Audiovisual Core requires that each record also contains the language-neutral terms. In the absence of this requirement, metadata consumers would need to know which terms are language-neutral and merge these terms from all provided metadataLanguages into a single record. Metadata consumers may re-combine the information based on the dcterms:identifier that identifies the multimedia resource. Nothing in this document would, however, prevent an implementer, e.g., of an XML-Schema representation, from providing a fully hierarchical schema in which language neutral terms occur only a single time, and only the language-specific terms are repeated in a way that unambiguously relates them to a metadata language. In RDF it may be a simple repetition of plain literals associated with a language (e.g., xml:lang attribute in RDF/XML). The language attribute would then be required in Audiovisual Core and would replace ac:metadataLanguage.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/metadataLanguageLiteral

metadataLanguageIRI
Title (Label)	Metadata Language IRI
Namespace	ac
Table	Media
Description	The URI of the language of description and other metadata (but not necessarily of the image itself).
Notes	Recommended best practice is to use the ISO639-2 list of URIs for ISO 3-letter language codes, http://id.loc.gov/vocabulary/iso639-2. At least one of ac:metadataLanguage and ac:metadataLanguageLiteral should be supplied but, when feasible, supplying both might make the metadata more widely useful. They must specify the same language. In case of ambiguity, ac:metadataLanguage prevails. This is NOT dcterms:language, which is about the resource, not the metadata. Metadata Language is deliberately single-valued, imposing on unstructured serializations a requirement that multi-lingual metadata be represented as separate, complete, metadata records. Audiovisual Core requires that each record also contains the language-neutral terms. In the absence of this requirement, metadata consumers would need to know which terms are language-neutral and merge these terms from all provided metadataLanguages into a single record. Metadata consumers may re-combine the information based on the dcterms:identifier that identifies the multimedia resource. Nothing in this document would, however, prevent an implementer, e.g., of an XML-Schema representation, from providing a fully hierarchical schema in which language neutral terms occur only a single time, and only the language-specific terms are repeated in a way that unambiguously relates them to a metadata language. In RDF it may be a simple repetition of plain literals associated with a language (e.g., xml:lang attribute in RDF/XML). The language attribute would then be required in Audiovisual Core and would replace ac:metadataLanguage.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/metadataLanguage

providerManagedID
Title (Label)	Provider-managed ID
Namespace	ac
Table	Media
Description	A free-form identifier (a simple number, an alphanumeric code, a URL, etc.) for the resource that is unique and meaningful primarily for the data provider.
Notes	Ideally, this would be a globally unique identifier (GUID), but the provider is encouraged to supply any form of identifier that simplifies communications on resources within their project and helps to locate individual data items in the provider's data repositories. It is the provider's decision whether to expose this value or not.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/providerManagedID

available
Title (Label)	Available
Namespace	dcterms
Table	Media
Description	Date (often a range) that the resource became or will become available.
Notes	The date (often a range) that the resource became or will become available. The date and time MUST comply with the World Wide Web Consortium (W3C) datetime practice, https://www.w3.org/TR/NOTE-datetime, which requires that date and time representation correspond to ISO 8601:1998, but with year fields always comprising 4 digits. This makes datetime records compliant with 8601:2004, https://www.iso.org/standard/40874.html. AC datetime values MAY also follow 8601:2004 for ranges by separating two ISO 8601 datetime fields by a solidus ("forward slash", '/'). A use case is the harvesting of metadata published before the media are available, which are pending a formal publication elsewhere. One important example is the case of metadata that documents an occurrence, which metadata harvesters might exploit without use of the media. See also the Wikipedia ISO 8601 entry, https://en.wikipedia.org/wiki/ISO_8601, for further explanation and examples.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/available

hasServiceAccessPoint
Title (Label)	Service Access Point
Namespace	ac
Table	Media
Description	In a chosen serialization (RDF, XML Schema, etc.) the potentially multiple service access points (e.g., for different resolutions of an image) might be provided in a referenced or in a nested object.
Notes	This property identifies one such access point. That is, each of potentially multiple values of hasServiceAccessPoint identifies a set of representation-dependent metadata using the properties defined under the Service Access Point Vocabulary section of the Audiovisual Core Term List document. Some serializations may flatten the model of service-access points by (a) dropping ac:hasServiceAccessPoint, ac:variant and ac:variantLiteral, (b) repeating properties from the Service Access Point Vocabulary and prefixing them with values of ac:variantLiteral. If such a flat serialization is necessary for services, we recommend to select from among term names of the form "AB" where "A" is one of thumbnail, trailer, lowerQuality, mediumQuality, goodQuality, bestQuality, offline and "B" is one of AccessURI, Format, Extent, FurtherInformationURL, LicensingException, ServiceExpectation (example: thumbnailAccessURI). Implementers in specific constraint languages such as XML Schema or RDF may wish to make Access URI and perhaps dcterms:format mandatory on instances of the service access point.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/hasServiceAccessPoint

serviceExpectation
Title (Label)	Service Expectation
Namespace	ac
Table	Media
Description	A term that describes what service expectations users may have of the ac:accessURI.
Notes	Recommended terms include online (denotes that the URL is expected to deliver the resource), authenticate (denotes that the URL delivers a login or other authentication interface requiring completion before delivery of the resource) published (non digital, denotes that the URL is the identifier of a non-digital published work, for example a doi.) Communities should develop their own controlled vocabularies for ac:serviceExpectation.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/serviceExpectation

accessURI
Title (Label)	Access URI
Namespace	ac
Table	Media
Description	A URI that uniquely identifies a service that provides a representation of the underlying resource.
Notes	If this resource can be acquired by an http request, its http URL SHOULD be given. If not, but it has some URI in another URI scheme, that MAY be given here. Value might point to something offline, such as a published CD, etc. For example, the doi of a published CD would be a suitable value.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/accessURI

format
Title (Label)	Format
Namespace	dc
Table	Media
Description	The file format, physical medium, or dimensions of the resource, denoted by a controlled value string.
Notes	A controlled value string describing the technical format of the resource (file format or physical medium). The string SHOULD be a controlled value from the Audiovisual Core Controlled Vocabulary for Dublin Core dcterms:format, although it MAY be any Media Type (MIME type) value from the IANA list of Media Types (https://www.iana.org/assignments/media-types/media-types.xhtml) or any commonly used file extension string. Human-readable information about the Controlled Vocabulary for format is at http://rs.tdwg.org/ac/doc/format/. This term can be used to describe offline digital content. In cases where the provided Service Access Point URL includes a standard file extension from which the format can be inferred, it is permissible to not provide a value for this property. See also the entry for dcterms:format in the Audiovisual Core term list document and see the DCMI FAQ on DC and DCTERMS Namespaces, https://web.archive.org/web/20171126043657/https://github.com/dcmi/repository/blob/master/mediawiki_wiki/FAQ/DC_and_DCTERMS_Namespaces.md, for discussion of the rationale for terms in two namespaces. It is best practice to use dcterms:format instead of dc:format whenever practical. Normal practice is to use the same Label if both are provided. Labels have no effect on information discovery and are only suggestions.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/format

formatIRI
Title (Label)	Format IRI
Namespace	dcterms
Table	Media
Description	The file format, physical medium, or dimensions of the resource, denoted by an IRI.
Notes	An IRI denoting the technical format of the resource (file format or physical medium). The IRI SHOULD be from the Audiovisual Core Controlled Vocabulary for Dublin Core dcterms:format. Human-readable information about the Controlled Vocabulary for dcterms:format is at http://rs.tdwg.org/ac/doc/format/. In cases where an IRI for the format does not exist in the controlled vocabulary, a provider can omit this property and provide a media type or file extension value for dc:format. See the DCMI FAQ on DC and DCTERMS Namespaces, https://web.archive.org/web/20171126043657/https://github.com/dcmi/repository/blob/master/mediawiki_wiki/FAQ/DC_and_DCTERMS_Namespaces.md, for discussion of the rationale for terms in two namespaces. Labels have no effect on information discovery and are only suggestions.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/format

variantLiteral
Title (Label)	Variant Literal
Namespace	ac
Table	Media
Description	The category describing this Service Access Point variant, denoted by a controlled value string.
Notes	Values SHOULD be selected from the Controlled Vocabulary for ac:variant. Human-readable information about the Controlled Vocabulary for ac:variant is at http://rs.tdwg.org/ac/doc/variant/. It is best practice to use ac:variant instead of ac:variantLiteral whenever practical.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/variantLiteral

variantIRI
Title (Label)	Variant IRI
Namespace	ac
Table	Media
Description	The category describing this Service Access Point variant, denoted by an IRI.
Notes	Values SHOULD be selected from the Controlled Vocabulary for ac:variant. Human-readable information about the Controlled Vocabulary for ac:variant is at http://rs.tdwg.org/ac/doc/variant/. In text-based systems such as tables, IRI values MUST be in unabbreviated form.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/variant

variantDescription
Title (Label)	Variant Description
Namespace	ac
Table	Media
Description	Text that describes this Service Access Point variant.
Notes	Most variants (thumb, low-res, high-res) are self-explanatory and it is best practice to leave this property empty if no special description is needed. It is provided for cases that require additional information (e.g., video shortened instead of simply quality reduced).
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/variantDescription

pixelXDimension
Title (Label)	Image Width
Namespace	exif
Table	Media
Description	Information specific to compressed data. When a compressed file is recorded, the valid width of the meaningful image shall be recorded in this tag, whether or not there is padding data or a restart marker. This tag shall not exist in an uncompressed file.
Notes	The width in pixels of the media specified by the access point. Contrary to the definition, in Audiovisual Core, this term MAY be used with uncompressed files. Audiovisual Core uses this term for any image type, including those to which EXIF does not apply and those that are not a compressed file type like JPEG.
Type	integer
Constraints	{"minimum": 1}
dcterms:isVersionOf	http://ns.adobe.com/exif/1.0/PixelXDimension

pixelYDimension
Title (Label)	Image Height
Namespace	exif
Table	Media
Description	Information specific to compressed data. When a compressed file is recorded, the valid height of the meaningful image shall be recorded in this tag, whether or not there is padding data or a restart marker. This tag shall not exist in an uncompressed file.
Notes	The height in pixels of the media specified by the access point. Contrary to the definition, in Audiovisual Core, this term MAY be used with uncompressed files. Audiovisual Core uses this term for any image type, including those to which EXIF does not apply and those that are not a compressed file type like JPEG.
Type	integer
Constraints	{"minimum": 1}
dcterms:isVersionOf	http://ns.adobe.com/exif/1.0/PixelYDimension

hashFunction
Title (Label)	Hash Function
Namespace	ac
Table	Media
Description	The cryptographic hash function used to compute the value given in the ac:hashValue.
Notes	Recommended values include MD5, SHA-1, SHA-224,SHA-256, SHA-384, SHA-512, SHA-512/224 and SHA-512/256
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/hashFunction

hashValue
Title (Label)	Hash Value
Namespace	ac
Table	Media
Description	The value computed by an ac:hashFunction applied to the media that will be delivered at the access point.
Notes	Best practice is to also specify the ac:hash Function using one of the standard literals from the Notes there.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/hashValue

furtherInformationURL
Title (Label)	Further Information URL
Namespace	ac
Table	Media
Description	The URL of a Web site that provides additional information about the version of the ac:Media resource that is provided by the ac:hasServiceAccessPoint.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/furtherInformationURL

commenterLiteral
Title (Label)	Commenter Literal
Namespace	ac
Table	Media
Description	A name of a dcterms:Agent primarily responsible for providing the ac:comments
Notes	See also ac:reviewerComments for the distinction between ac:comments and ac:reviewerComments. See also the entry for ac:commenter and the section Namespaces, Prefixes and Term Names in the Audiovisual Core Term List document for discussion of the rationale for separate terms taking URI values from those taking Literal values where both are possible. Normal practice is to use the same Label if both are provided. Labels have no effect on information discovery and are only suggestions.
Examples	`anonymous`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/commenterLiteral

commenter_fk
Title (Label)	Commenter (Foreign Key)
Namespace	dwc
Table	Media
Description	An identifier for a dcterms:Agent primarily responsible for providing the ac:comments.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

commenterID
Title (Label)	Commenter ID
Namespace	dwc
Table	Media
Description	An identifier for a dcterms:Agent primarily responsible for providing the ac:comments.
Notes	Implementers and communities of practice MAY produce restrictions or recommendations on the choice of vocabularies. See also ac:reviewerComments for the distinction between ac:comments and ac:reviewerComments. See also the entry for ac:commenterLiteral and the section Namespaces, Prefixes and Term Names in the Audiovisual Core Term List document for discussion of the rationale for separate terms taking URI values from those taking Literal values where both are possible. Normal practice is to use the same Label if both are provided. Labels have no effect on information discovery and are only suggestions. The value in this field MAY refer to a dcterms:BibliographicResource within or external to the dataset in which this record originated. The value in this field MAY refer to a dcterms:Agent within or external to the dataset in which this record originated.
Examples	`https://orcid.org/0000-0002-1825-0097`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

comments
Title (Label)	Comments
Namespace	ac
Table	Media
Description	Any comment provided on the ac:Media resource, as free-form text.
Notes	Best practice would also identify the ac:commenter. Comments may refer to the resource itself (e.g., asserting a taxon name or location of a biological subject in an image), or to the relation between resource and associated metadata (e.g., asserting that the taxon name given in the metadata is wrong, without asserting a positive identification). There is a separate item from ac:reviewerComments, which is defined more as an expert-level review. Implementers or communities of practice might establish conventions about the meaning of the absence of an ac:commenter, but this specification is silent on that matter.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/comments

rating
Title (Label)	Rating
Namespace	xmp
Table	Media
Description	A user-assigned rating for this file. The value shall be -1 or in the range [0..5], where -1 indicates "rejected" and 0 indicates "unrated". If xmp:Rating is not present, a value of 0 should be assumed.
Notes	A rating for an ac:Media resource, provided by record originators or editors, with '1' (worst) to '5' (best). Anticipated usage is for a typical 'star rating' UI, with the addition of a notion of rejection. Values MAY be decimal numbers in the permitted range. The origin of the rating is not communicated. It may, e.g., be based on user feedback or on editorial ratings. By "user-assigned" is meant assigned by the originator or editor of the record using the term.
Examples	`1` `5`
Type	string
dcterms:isVersionOf	http://ns.adobe.com/xap/1.0/Rating

reviewerLiteral
Title (Label)	Reviewer Literal
Namespace	ac
Table	Media
Description	A name of a dcterms:Agent primarily responsible for providing the ac:reviewerComments
Notes	If present, then resource is peer-reviewed, even if ac:reviewerComments is absent or empty. Its presence tells whether an expert in the subject featured in the media has reviewed an ac:Media resource or collection and approved its metadata description; MUST display a name or the literal "anonymous" (= anonymously reviewed). Provider is asserting they accept this review as competent. See also ac:reviewer and the section Namespaces, Prefixes and Term Names in the Audiovisual Core Term List document for discussion of the rationale for separate terms taking URI values from those taking Literal values where both are possible. Normal practice is to use the same Label if both are provided. Labels have no effect on information discovery and are only suggestions.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/reviewerLiteral

reviewer_fk
Title (Label)	Reviewer (Foreign Key)
Namespace	dwc
Table	Media
Description	An identifier for a dcterms:Agent primarily responsible for providing the ac:reviewerComments.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

reviewerID
Title (Label)	Reviewer ID
Namespace	dwc
Table	Media
Description	An identifier for a dcterms:Agent primarily responsible for providing the ac:reviewerComments
Notes	If present, then resource is peer-reviewed, even if ac:reviewerComments is absent or empty. Its presence tells whether an expert in the subject featured in the media has reviewed an ac:Media resource or collection and approved its metadata description; MUST display a name or the literal "anonymous" (= anonymously reviewed). Provider is asserting they accept this review as competent. See also ac:reviewerLiteral and the section Namespaces, Prefixes and Term Names in the Audiovisual Core Term List document for discussion of the rationale for separate terms taking URI values from those taking Literal values where both are possible. Normal practice is to use the same Label if both are provided. Labels have no effect on information discovery and are only suggestions. The value in this field MAY refer to a dcterms:Agent within or external to the dataset in which this record originated.
Examples	`https://orcid.org/0000-0002-1825-0097`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

reviewerComments
Title (Label)	Reviewer Comments
Namespace	ac
Table	Media
Description	Any comment provided by a reviewer with expertise in the subject, as free-form text.
Notes	Reviewer Comments may refer to the resource itself (e.g., asserting a taxon name or location of a biological subject in an image), or to the relation between resource and associated metadata (e.g., asserting that the taxon name given in the metadata is wrong, without asserting a positive identification). There is a separate item "Comments" for text from commenters of unrecorded expertise.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/reviewerComments

physicalSetting
Title (Label)	Physical Setting
Namespace	ac
Table	Media
Description	The setting of the content represented in an ac:Media resource, such as images, sounds, and movies if the provider deems them relevant.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/physicalSetting

subjectCategory
Title (Label)	Subject Category
Namespace	ac
Table	Media
Description	A term to describe the content of a image or a region of interest within an image using a controlled value string.
Notes	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/CVtermLiteral

subjectCategoryIRI
Title (Label)	Subject Category IRI
Namespace	Iptc4xmpExt
Table	Media
Description	An IRI of a controlled vocabulary value for the subject category of an ac:Media resource.
Notes	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://iptc.org/std/Iptc4xmpExt/2008-02-29/CVterm

subjectCategoryVocabulary
Title (Label)	Subject Category Source
Namespace	ac
Table	Media
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:subjectCategory is given.
Notes	The Audiovisual Core recommended vocabularies do not need to be cited here. There is no required linkage between individual Subject Category terms and the vocabulary; the mechanism is intended to support discovery of the normative URI for a term, but not guarantee it.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectCategoryVocabulary

tag
Title (Label)	Tag
Namespace	ac
Table	Media
Description	General keywords or tags.
Notes	Tags may be multi-worded phrases. Where scientific names, common names, geographic locations, etc. are separable, those should go into the more specific coverage metadata items provided further below. Examples: "flower diagram". Character or part keywords like "leaf", or "flower color" are especially desirable.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/tag

subjectPartLiteral
Title (Label)	Subject Part Literal
Namespace	ac
Table	Media
Description	The portion or product of organism morphology, behaviour, environment, etc. that is either predominantly shown or particularly well exemplified by the ac:Media resource, denoted by a controlled value string.
Notes	Values SHOULD be selected from the Controlled Vocabulary for ac:subjectPart. It is best practice to use ac:subjectPart instead of ac:subjectPartLiteral whenever practical.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectPartLiteral

subjectPartIRI
Title (Label)	Subject Part IRI
Namespace	ac
Table	Media
Description	The portion or product of organism morphology, behaviour, environment, etc. that is either predominantly shown or particularly well exemplified by the ac:Media resource, denoted by an IRI.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectPart

subjectOrientationLiteral
Title (Label)	Subject Orientation Literal
Namespace	ac
Table	Media
Description	Specific orientation (= direction, view angle) of the subject represented in the ac:Media resource with respect to the acquisition device, denoted by a controlled value string.
Notes	Values SHOULD be selected from the Controlled Vocabulary for ac:subjectOrientation. It is best practice to use ac:subjectOrientation instead of ac:subjectOrientationLiteral whenever practical.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectOrientationLiteral

subjectOrientationIRI
Title (Label)	Subject Orientation IRI
Namespace	ac
Table	Media
Description	Specific orientation (= direction, view angle) of the subject represented in the ac:Media resource with respect to the acquisition device, denoted by an IRI.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectOrientation

startTime
Title (Label)	Start Time in Seconds
Namespace	ac
Table	Media
Description	The beginning of a temporal region, specified as an absolute offset relative to the beginning of an ac:Media resource (this corresponds to Normal Play Time RFC 2326), specified as seconds, with an optional fractional part to indicate milliseconds or finer.
Notes	This term MUST only be applied to a region of interest.
Type	number
Constraints	{"minimum": 0}
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/startTime

endTime
Title (Label)	End Time in Seconds
Namespace	ac
Table	Media
Description	The end of a temporal region, specified as an absolute offset relative to the beginning of an ac:Media resource (this corresponds to Normal Play Time RFC 2326), specified as seconds, with an optional fractional part to indicate milliseconds or finer.
Notes	This term MUST only be applied to a region of interest.
Type	number
Constraints	{"minimum": 0}
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/endTime

startTimestamp
Title (Label)	Start Time Stamp
Namespace	ac
Table	Media
Description	The beginning of a temporal region, specified as real-world clock time ISO 8601 timestamps, using UTC timezone, with an optional fractional part to indicate milliseconds or finer. There is no limit on the number of decimal places for the decimal fraction.
Notes	This term MAY be applied to a region of interest or an entire media item.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/startTimestamp

endTimestamp
Title (Label)	End Time Stamp
Namespace	ac
Table	Media
Description	The end of a temporal region, specified as real-world clock time ISO 8601 timestamps, using UTC timezone, with an optional fractional part to indicate milliseconds or finer. There is no limit on the number of decimal places for the decimal fraction.
Notes	This term MAY be applied to a region of interest or an entire media item.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/endTimestamp

mediaDuration
Title (Label)	Media Duration
Namespace	ac
Table	Media
Description	The playback duration of an audio or video file in seconds.
Notes	This might be different from the time in seconds calculated as the difference of ac:endTimestamp and ac:startTimestamp if ac:mediaSpeed is not equal to 1.
Type	number
Constraints	{"minimum": 0}
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/mediaDuration

mediaSpeed
Title (Label)	Media Speed
Namespace	ac
Table	Media
Description	The decimal fraction representing the natural speed over the encoded speed.
Notes	If a value for ac:mediaSpeed is not provided, applications SHOULD assume that 1.0 is the value. For example, in a time-lapse recording where 60 seconds of natural time is represented in 1 second of media this would be 60. In a time-expanded recording where 1 second of recording is represented in 5 seconds of media, this would be 0.2.
Examples	`60` `0.2`
Type	number
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/mediaSpeed

freqHigh
Title (Label)	Upper frequency bound
Namespace	ac
Table	Media
Description	The highest frequency of the phenomena reflected in the multimedia item or Region of Interest.
Notes	Numeric value in hertz (Hz). This term refers to the sound events depicted and not to the constraints of the recording medium, so are in principle independent from sampleRate. If dwc:scientificName is specified and if applied to the entire multimedia item, these frequency bounds refer to the sounds of the species given in the dwc:scientificName throughout the whole recording. Although many users will specify both freqLow and freqHigh, it is permitted to specify just one or the other, for example if only one of the bounds is discernible.
Examples	`60`
Type	number
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/freqHigh

freqLow
Title (Label)	Lower frequency bound
Namespace	ac
Table	Media
Description	The lowest frequency of the phenomena reflected in the multimedia item or Region of Interest.
Notes	Numeric value in hertz (Hz). This term refers to the sound events depicted and not to the constraints of the recording medium, so are in principle independent from sampleRate. If dwc:scientificName is specified and if applied to the entire multimedia item, these frequency bounds refer to the sounds of the species given in the dwc:scientificName throughout the whole recording. Although many users will specify both freqLow and freqHigh, it is permitted to specify just one or the other, for example if only one of the bounds is discernible.
Examples	`60`
Type	number
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/freqLow

xFrac
Title (Label)	Fractional X
Namespace	ac
Table	Media
Description	The horizontal position of a reference point, measured from the left side of an ac:Media resource and expressed as a decimal fraction of the width of an ac:Media resource.
Notes	A valid value MUST be greater than or equal to zero and less than or equal to one. The precision of this value SHOULD be great enough that when the ac:xFrac value is multiplied by the exif:PixelXDimension of the Best Quality variant of the Service Access point, rounding to the nearest integer results in the same horizontal pixel location originally used to define the point. This point can serve as the horizontal position of the upper left corner of a bounding rectangle, or as the center of a circle.
Examples	`0.5` `1`
Type	number
Constraints	{"minimum": 0, "maximum": 1}
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/xFrac

yFrac
Title (Label)	Fractional Y
Namespace	ac
Table	Media
Description	The vertical position of a reference point, measured from the top of an ac:Media resource and expressed as a decimal fraction of the height of an ac:Media resource.
Notes	A valid value MUST be greater than or equal to zero and less than or equal to one. The precision of this value SHOULD be great enough that when the ac:yFrac value is multiplied by the exif:PixelYDimension of the Best Quality variant of the Service Access point, rounding to the nearest integer results in the same vertical pixel originally used to define the point. This point can serve as the vertical position of the upper left corner of a bounding rectangle, or as the center of a circle.
Examples	`0.5` `1`
Type	number
Constraints	{"minimum": 0, "maximum": 1}
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/yFrac

heightFrac
Title (Label)	Fractional Height
Namespace	ac
Table	Media
Description	The height of the bounding rectangle, expressed as a decimal fraction of the height of an ac:Media resource.
Notes	The sum of a valid value plus ac:yFrac MUST be greater than zero and less than or equal to one. The precision of this value SHOULD be great enough that when ac:heightFrac and ac:yFrac are used with the exif:PixelYDimension of the Best Quality variant of the Service Access point to calculate the lower right corner of the rectangle, rounding to the nearest integer results in the same vertical pixel originally used to define the point. This term MUST NOT be used with ac:radius to define a region of interest. Zero-sized bounding rectangles are not allowed. To designate a point, use the radius option with a zero value.
Examples	`0.5` `1`
Type	number
Constraints	{"minimum": 0, "maximum": 1}
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/heightFrac

widthFrac
Title (Label)	Fractional Width
Namespace	ac
Table	Media
Description	The width of the bounding rectangle, expressed as a decimal fraction of the width of an ac:Media resource.
Notes	The sum of a valid value plus ac:xFrac MUST be greater than zero and less than or equal to one. The precision of this value SHOULD be great enough that when ac:widthFrac and ac:xFrac are used with the exif:PixelXDimension of the Best Quality variant of the Service Access point to calculate the lower right corner of the rectangle, rounding to the nearest integer results in the same horizontal pixel originally used to define the point. This term MUST NOT be used with ac:radius to define a region of interest. Zero-sized bounding rectangles are not allowed. To designate a point, use the radius option with a zero value.
Examples	`0.5` `1`
Type	number
Constraints	{"minimum": 0, "maximum": 1}
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/widthFrac

radius
Title (Label)	Radius
Namespace	ac
Table	Media
Description	The radius of a bounding circle or arc, expressed as a fraction of the width of an ac:Media resource.
Notes	A valid value MUST be greater than or equal to zero. A valid value MAY cause the designated circle to extend beyond the bounds of an ac:Media resource. In that case, the arc within an ac:Media resource plus the bounds of an ac:Media resource specify the region of interest. This term MUST NOT be used with ac:widthFrac or ac:heightFrac to define a region of interest. This term may be used with ac:xFrac and ac:yFrac to define a point. In that case, the implication is that the point falls on some object of interest within an ac:Media resource, but nothing more can be assumed about the bounds of that object.
Examples	`100`
Type	integer
Constraints	{"minimum": 0}
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/radius

provenance_fk
Title (Label)	Provenance (Foreign Key)
Namespace	dcterms
Table	Media
Description	An identifier for a dwc:Provenance.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/provenanceID

usagePolicy_fk
Title (Label)	Usage Policy (Foreign Key)
Namespace	dcterms
Table	Media
Description	An identifier for a dwc:UsagePolicy for an ac:Media.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/usagePolicyID

owner
Title (Label)	Owner
Namespace	xmprights
Table	Media
Description	A list of legal owners of the resource.
Notes	`unknown`
Examples	`The names of the owners `Ron Thomas, Roz Thomas` or a URI that identifies the owner`
Type	string
dcterms:isVersionOf	http://ns.adobe.com/xap/1.0/rights/Owner

owner_fk
Title (Label)	Owner (Foreign Key)
Namespace	dwc
Table	Media
Description	An identifier for a dcterms:Agent that is the owner of the ac:Media resource.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

license
Title (Label)	License
Namespace	dcterms
Table	Media
Description	A legal document giving official permission to do something with the resource.
Notes	Recommended practice is to identify the license document with a URI. If this is not possible or feasible, a literal value that identifies the license may be provided.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/license

Media Agent Role

Identifier: http://rs.tdwg.org/dwc-dp/1.0/media-agent-role

Description: A role filled by a dcterms:Agent with respect to an ac:Media entity.

dcterms:isVersionOf: http://example.com/term-pending//media-agent-role

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
media_fk	role for	media	media_pk	foreign key	Yes	Yes
agent_fk	role holder	agent	agent_pk	foreign key	Yes	Yes

media_fk
Title (Label)	Media (Foreign Key)
Namespace	dcterms
Table	Media Agent Role
Description	An identifier for an ac:Media resource.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://purl.org/dc/terms/identifier

agent_fk
Title (Label)	Agent (Foreign Key)
Namespace	dwc
Table	Media Agent Role
Description	An identifier for a dcterms:Agent.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

agentRole
Title (Label)	Agent Role
Namespace	dwc
Table	Media Agent Role
Description	A category that best matches the nature of a role of a dcterms:Agent.
Notes	Recommended best practice is to use a controlled vocabulary for the roles appropriate to the class of resource a dcterms:AgentRole is related to.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResource

agentRoleIRI
Title (Label)	Agent Role IRI
Namespace	dwciri
Table	Media Agent Role
Description	An IRI of the controlled vocabulary value for a role of a dcterms:Agent.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResourceID

agentRoleSource
Title (Label)	Agent Role Source
Namespace	dc
Table	Media Agent Role
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:agentRole is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

agentRoleOrder
Title (Label)	Agent Role Order
Namespace	dwc
Table	Media Agent Role
Description	A numerical position of an AgentRole in a set of AgentRoles that have the same combination of agentRole, agentRoleIRI, agentRoleSource and related target identifier.
Notes	One could use dwc:agentRoleOrder to create an ordered list of collectors (dwc:agentRole = 'collector') for a dwc:MaterialEntity, for example. The first would have dwc:agentRoleOrder=1, the second would have dwc:agentRoleOrder=2.
Type	integer
Constraints	{"required": true, "minimum": 1}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentRoleOrder

agentRoleDate
Title (Label)	Agent Role Date
Namespace	dwc
Table	Media Agent Role
Description	An interval during which a dcterms:AgentRole was in effect.
Notes	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionEffectiveDate

Media Assertion

Identifier: http://rs.tdwg.org/dwc-dp/1.0/media-assertion

Description: A dwc:Assertion made by a dcterms:Agent about an ac:Media entity.

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/MeasurementOrFact

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
assertionID				weak primary key	No	No
media_fk	about	media	media_pk	foreign key	Yes	Yes
assertionBy_fk	asserted by	agent	agent_pk	foreign key	Yes	No
assertionByID	asserted by	agent	agentID	weak foreign key	No	No
assertionProtocol_fk	followed	protocol	protocol_pk	foreign key	Yes	No

assertionID
Title (Label)	Assertion ID
Namespace	dwc
Table	Media Assertion
Description	An identifier for a dwc:Assertion.
Notes	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": true}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionID

media_fk
Title (Label)	Media (Foreign Key)
Namespace	dcterms
Table	Media Assertion
Description	An identifier for an ac:Media resource.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://purl.org/dc/terms/identifier

verbatimAssertionType
Title (Label)	Verbatim Assertion Type
Namespace	dwc
Table	Media Assertion
Description	A string representing the type of dwc:Assertion as it appeared in the original record.
Notes	This term is meant to allow the capture of an unaltered original name for a dwc:assertionType. This term is meant to be used in addition to dwc:assertionType, not instead of it.
Examples	`water_temp` `Fish biomass` `sampling net mesh size`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/verbatimAssertionType

assertionType
Title (Label)	Assertion Type
Namespace	dwc
Table	Media Assertion
Description	A category that best matches the nature of a dwc:Assertion.
Notes	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`tail length` `temperature` `trap line length` `survey area` `trap type`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionType

assertionTypeIRI
Title (Label)	Assertion Type IRI
Namespace	dwciri
Table	Media Assertion
Description	An IRI of a controlled vocabulary value for a type of dwc:Assertion.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/iri/measurementType

assertionTypeSource
Title (Label)	Assertion Type Source
Namespace	dc
Table	Media Assertion
Description	A reference to the controlled vocabulary in which the definition of a value in dwc:assertionType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionMadeDate
Title (Label)	Assertion Made Date
Namespace	dwc
Table	Media Assertion
Description	A date on which a dwc:Assertion was created.
Notes	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionMadeDate

assertionEffectiveDate
Title (Label)	Assertion Effective Date
Namespace	dwc
Table	Media Assertion
Description	A date-time or time interval during which an asserted state or measurement was deemed to be in effect.
Notes	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionEffectiveDate

assertionValue
Title (Label)	Assertion Value
Namespace	dwc
Table	Media Assertion
Description	An asserted value.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionValue

assertionValueIRI
Title (Label)	Assertion Value IRI
Namespace	dwciri
Table	Media Assertion
Description	An IRI of the controlled vocabulary value for a value of a dwc:Assertion.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/iri/measurementValue

assertionValueSource
Title (Label)	Assertion Value Source
Namespace	dc
Table	Media Assertion
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:assertionValue is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionUnit
Title (Label)	Assertion Unit
Namespace	dwc
Table	Media Assertion
Description	Unit associated with the value in dwc:assertionValue.
Notes	Recommended best practice is to use a controlled vocabulary such as the Ontology of Units of Measure http://www.wurvoc.org/vocabularies/om-1.8/ of SI units, derived units, or other non-SI units accepted for use within the SI. For units that are composed of multiple parts, use the patterns as given in "A Primer for Communicating Mathematics via Plain Text" (https://cse.sc.edu/~fenner/latex-ASCII.pdf) by Stephen Fenner (e.g., `g/cm^3` for grams per cubic centimeter). For other units, provide the value as a recognizable standard (e.g., '%') or written out in full and in the plural (e.g., `individuals`). It is fine to provide non-SI units in the original language of the dataset.
Examples	`m` `s` `g` `ml`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionUnit

assertionUnitIRI
Title (Label)	Assertion Unit IRI
Namespace	dwciri
Table	Media Assertion
Description	An IRI of a controlled vocabulary value for the unit of a dwc:assertionValue.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/iri/assertionUnit

assertionUnitSource
Title (Label)	Assertion Unit Source
Namespace	dc
Table	Media Assertion
Description	A reference to a controlled vocabulary in which the definition of the value in dwc:assertionUnit is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionError
Title (Label)	Assertion Error
Namespace	dwc
Table	Media Assertion
Description	A description of the potential error associated with a dwc:assertionValue.
Examples	`0.01` `normal distribution with variation of 2 m`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionError

assertionBy
Title (Label)	Assertion By
Namespace	dwc
Table	Media Assertion
Description	A list (concatenated and separated) of names of dcterms:Agents responsible for making a dwc:Assertion.
Notes	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionBy

assertionBy_fk
Title (Label)	Assertion By (Foreign Key)
Namespace	dwc
Table	Media Assertion
Description	An identifier for a dcterms:Agent responsible for making a dwc:Assertion.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

assertionByID
Title (Label)	Assertion By ID
Namespace	dwc
Table	Media Assertion
Description	An identifier for a dcterms:Agent responsible for making a dwc:Assertion.
Notes	The value in this field MAY refer to a dcterms:Agent within or external to the dataset in which this record originated.
Examples	`https://orcid.org/0000-0002-1825-0097`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

assertionProtocols
Title (Label)	Assertion Protocols
Namespace	dwc
Table	Media Assertion
Description	Names of, references to, or descriptions of dwc:Protocols used in making a dwc:Assertion.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionProtocols

assertionProtocol_fk
Title (Label)	Assertion Protocol (Foreign Key)
Namespace	dwc
Table	Media Assertion
Description	An identifier for a dwc:Protocol used to make a dwc:Assertion.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/protocolID

assertionReferences
Title (Label)	Assertion References
Namespace	dwc
Table	Media Assertion
Description	A list (concatenated and separated) of dcterms:BibliographicResources associated with a dwc:Assertion.
Notes	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionReferences

assertionRemarks
Title (Label)	Assertion Remarks
Namespace	dwc
Table	Media Assertion
Description	Comments or notes about a dwc:Assertion.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionRemarks

Media Identifier

Identifier: http://rs.tdwg.org/dwc-dp/1.0/media-identifier

Description: An adms:Identifier for an ac:Media entity.

Notes: An important point to note is that properties of the adms:Identifier class are properties of the Identifier, not the resource that it identifies or the agency that issued it.

dcterms:isVersionOf: http://www.w3.org/ns/adms#Identifier

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
media_fk	for	media	media_pk	foreign key	Yes	Yes

media_fk
Title (Label)	Media (Foreign Key)
Namespace	dcterms
Table	Media Identifier
Description	An identifier for an ac:Media resource.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://purl.org/dc/terms/identifier

identifier
Title (Label)	Identifier
Namespace	skos
Table	Media Identifier
Description	An unambiguous reference to a resource within a given context.
Notes	Recommended best practice is to identify a resource by means of a string conforming to a formal identification system.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://www.w3.org/2004/02/skos/core#notation

identifierType
Title (Label)	Identifier Type
Namespace	dc
Table	Media Identifier
Description	A category or system that best matches the nature of an identifier (skos:notation).
Notes	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/type

identifierTypeIRI
Title (Label)	Identifier Type IRI
Namespace	dcterms
Table	Media Identifier
Description	An IRI of a controlled vocabulary value for a type of identifier.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/type

identifierTypeSource
Title (Label)	Identifier Type Source
Namespace	dc
Table	Media Identifier
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:identifierType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

identifierLanguage
Title (Label)	Identifier Language
Namespace	dc
Table	Media Identifier
Description	A language in which an identifier is presented.
Notes	Recommended best practice is to use an ISO639-2 three-letter language code.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/language

Media Provenance

Identifier: http://rs.tdwg.org/dwc-dp/1.0/media-provenance

Description: A dwc:Provenance for an ac:Media entity.

dcterms:isVersionOf: http://example.com/term-pending//media-provenance

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
provenance_fk	has	provenance	provenance_pk	foreign key	Yes	Yes
media_fk	for	media	media_pk	foreign key	Yes	Yes

provenance_fk
Title (Label)	Provenance (Foreign Key)
Namespace	dcterms
Table	Media Provenance
Description	An identifier for a dwc:Provenance.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/provenanceID

media_fk
Title (Label)	Media (Foreign Key)
Namespace	dcterms
Table	Media Provenance
Description	An identifier for an ac:Media resource.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://purl.org/dc/terms/identifier

Media Usage Policy

Identifier: http://rs.tdwg.org/dwc-dp/1.0/media-usage-policy

Description: Rights, usage, and attribution statements applicable to an ac:Media entity.

dcterms:isVersionOf: http://example.com/term-pending//media-usage-policy

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
media_fk	for	media	media_pk	foreign key	Yes	Yes
usagePolicy_fk	has	usage-policy	usagePolicy_pk	foreign key	Yes	Yes

media_fk
Title (Label)	Media (Foreign Key)
Namespace	dcterms
Table	Media Usage Policy
Description	An identifier for an ac:Media resource.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://purl.org/dc/terms/identifier

usagePolicy_fk
Title (Label)	Usage Policy (Foreign Key)
Namespace	dcterms
Table	Media Usage Policy
Description	An identifier for a dwc:UsagePolicy.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/usagePolicyID

Molecular Protocol

Identifier: http://rs.tdwg.org/dwc-dp/1.0/molecular-protocol

Description: A protocol used to perform a dwc:NucleotideAnalysis and potentially derive a dwc:NucleotideSequence from a dwc:MaterialEntity.

Examples:

`a standard DNA barcoding workflow using Sanger sequencing`

`a shotgun metagenomics pipeline for microbial community profiling`

`a high-throughput amplicon sequencing protocol targeting 16S rRNA`

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/MolecularProtocol

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
molecularProtocol_pk				primary key	Yes	Yes
molecularProtocolID				weak primary key	No	No
source_mat_fk	has source	material	materialEntity_pk	foreign key	Yes	No
source_mat_id	has source	material	materialEntityID	weak foreign key	No	No

molecularProtocol_pk
Title (Label)	Molecular Protocol (Primary Key)
Namespace	dwc
Table	Molecular Protocol
Description	A unique identifier for a dwc:MolecularProtocol.
Notes	The value in this field MAY be changed in aggregation to guarantee uniqueness.
Type	string
Constraints	{"required": true, "unique": true}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/molecularProtocolID

molecularProtocolID
Title (Label)	Molecular Protocol ID
Namespace	dwc
Table	Molecular Protocol
Description	An identifier for a dwc:MolecularProtocol.
Notes	The value in this field MUST be preserved in aggregation. Recommended best practice is to use a globally unique identifier.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/molecularProtocolID

assayType
Title (Label)	Assay Type
Namespace	dwc
Table	Molecular Protocol
Description	A type of method used in a study to detect taxon/taxa of interest in a dwc:MaterialEntity.
Notes	Recommended best practice is to use a controlled vocabulary.
Examples	`targeted` `metabarcoding` `other`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assayType

samp_name
Title (Label)	samp_name
Namespace	mixs
Table	Molecular Protocol
Description	Sample Name is a name that you choose for the sample. It can have any format, but we suggest that you make it concise, unique and consistent within your lab, and as informative as possible. Every Sample Name from a single Submitter must be unique.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0001107

project_name
Title (Label)	project_name
Namespace	mixs
Table	Molecular Protocol
Description	Name of the project within which the sequencing was organized.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000092

experimental_factor
Title (Label)	experimental_factor
Namespace	mixs
Table	Molecular Protocol
Description	Experimental factors are essentially the variable aspects of an experiment design which can be used to describe an experiment, or set of experiments, in an increasingly detailed manner. This field accepts ontology terms from Experimental Factor Ontology (EFO) and/or Ontology for Biomedical Investigations (OBI). For a browser of EFO (v 2.95) terms, please see http://purl.bioontology.org/ontology/EFO; for a browser of OBI (v 2018-02-12) terms please see http://purl.bioontology.org/ontology/OBI.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000008

samp_taxon_id
Title (Label)	samp_taxon_id
Namespace	mixs
Table	Molecular Protocol
Description	NCBI taxon id of the sample. Maybe be a single taxon or mixed taxa sample. Use "synthetic metagenome" for mock community/positive controls, or "blank sample" for negative controls.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0001320

neg_cont_type
Title (Label)	neg_cont_type
Namespace	mixs
Table	Molecular Protocol
Description	The substance or equipment used as a negative control in an investigation.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0001321

pos_cont_type
Title (Label)	pos_cont_type
Namespace	mixs
Table	Molecular Protocol
Description	The substance, mixture, product, or apparatus used to verify that a process which is part of an investigation delivers a true positive.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0001322

env_broad_scale
Title (Label)	env_broad_scale
Namespace	mixs
Table	Molecular Protocol
Description	In this field, report which major environmental system your sample or specimen came from. The systems identified should have a coarse spatial grain, to provide the general environmental context of where the sampling was done (e.g., were you in the desert or a rainforest?). We recommend using subclasses of ENVO’s biome class: http://purl.obolibrary.org/obo/ENVO_00000428. Format (one term): termLabel [termID], Format (multiple terms): termLabel [termID]\|termLabel [termID]\|termLabel [termID]. Example: Annotating a water sample from the photic zone in middle of the Atlantic Ocean, consider: oceanic epipelagic zone biome [ENVO:01000033]. Example: Annotating a sample from the Amazon rainforest consider: tropical moist broadleaf forest biome [ENVO:01000228]. If needed, request new terms on the ENVO tracker, identified here: http://www.obofoundry.org/ontology/envo.html.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000012

env_local_scale
Title (Label)	env_local_scale
Namespace	mixs
Table	Molecular Protocol
Description	In this field, report the entity or entities which are in your sample or specimen’s local vicinity and which you believe have significant causal influences on your sample or specimen. Please use terms that are present in ENVO and which are of smaller spatial grain than your entry for env_broad_scale. Format (one term): termLabel [termID]; Format (multiple terms): termLabel [termID]\|termLabel [termID]\|termLabel [termID]. Example: Annotating a pooled sample taken from various vegetation layers in a forest consider: canopy [ENVO:00000047]\|herb and fern layer [ENVO:01000337]\|litter layer [ENVO:01000338]\|understory [01000335]\|shrub layer [ENVO:01000336]. If needed, request new terms on the ENVO tracker, identified here: http://www.obofoundry.org/ontology/envo.html.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000013

env_medium
Title (Label)	env_medium
Namespace	mixs
Table	Molecular Protocol
Description	In this field, report which environmental material or materials (pipe separated) immediately surrounded your sample or specimen prior to sampling, using one or more subclasses of ENVO’s environmental material class: http://purl.obolibrary.org/obo/ENVO_00010483. Format (one term): termLabel [termID]; Format (multiple terms): termLabel [termID]\|termLabel [termID]\|termLabel [termID]. Example: Annotating a fish swimming in the upper 100 m of the Atlantic Ocean, consider: ocean water [ENVO:00002151]. Example: Annotating a duck on a pond consider: pond water [ENVO:00002228]\|air ENVO_00002005. If needed, request new terms on the ENVO tracker, identified here: http://www.obofoundry.org/ontology/envo.html.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000014

subspecf_gen_lin
Title (Label)	subspecf_gen_lin
Namespace	mixs
Table	Molecular Protocol
Description	This should provide further information about the genetic distinctness of the sequenced organism by recording additional information e.g., serovar, serotype, biotype, ecotype, or any relevant genetic typing schemes like Group I plasmid. It can also contain alternative taxonomic information. It should contain both the lineage name, and the lineage rank, i.e. biovar:abc123.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000020

ploidy
Title (Label)	ploidy
Namespace	mixs
Table	Molecular Protocol
Description	The ploidy level of the genome (e.g., allopolyploid, haploid, diploid, triploid, tetraploid). It has implications for the downstream study of duplicated gene and regions of the genomes (and perhaps for difficulties in assembly). For terms, please select terms listed under class ploidy (PATO:001374) of Phenotypic Quality Ontology (PATO), and for a browser of PATO (v 2018-03-27) please refer to http://purl.bioontology.org/ontology/PATO.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000021

num_replicons
Title (Label)	num_replicons
Namespace	mixs
Table	Molecular Protocol
Description	Reports the number of replicons in a nuclear genome of eukaryotes, in the genome of a bacterium or archaea or the number of segments in a segmented virus. Always applied to the haploid chromosome count of a eukaryote.
Type	integer
dcterms:isVersionOf	https://w3id.org/mixs/0000022

extrachrom_elements
Title (Label)	extrachrom_elements
Namespace	mixs
Table	Molecular Protocol
Description	Do plasmids exist of significant phenotypic consequence (e.g., ones that determine virulence or antibiotic resistance). Megaplasmids? Other plasmids (borrelia has 15+ plasmids).
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000023

estimated_size
Title (Label)	estimated_size
Namespace	mixs
Table	Molecular Protocol
Description	The estimated size of the genome prior to sequencing. Of particular importance in the sequencing of (eukaryotic) genome which could remain in draft form for a long or unspecified period.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000024

ref_biomaterial
Title (Label)	ref_biomaterial
Namespace	mixs
Table	Molecular Protocol
Description	Primary publication if isolated before genome publication; otherwise, primary genome report.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000025

source_mat_fk
Title (Label)	Source Material (Primary Key)
Namespace	dwc
Table	Molecular Protocol
Description	A unique identifier assigned to a material sample (as defined by http://rs.tdwg.org/dwc/terms/materialEntityID, and as opposed to a particular digital record of a material sample) used for extracting nucleic acids, and subsequent sequencing. The identifier can refer either to the original material collected or to any derived sub-samples. The INSDC qualifiers /specimen_voucher, /bio_material, or /culture_collection may or may not share the same value as the source_mat_id field. For instance, the /specimen_voucher qualifier and source_mat_id may both contain ´UAM:Herps:14´, referring to both the specimen voucher and sampled tissue with the same identifier. However, the /culture_collection qualifier may refer to a value from an initial culture (e.g., ATCC:11775) while source_mat_id would refer to an identifier from some derived culture from which the nucleic acids were extracted (e.g., xatc123 or ark:/2154/R2).
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/materialEntityID

source_mat_id
Title (Label)	source_mat_id
Namespace	mixs
Table	Molecular Protocol
Description	A unique identifier assigned to a material sample (as defined by http://rs.tdwg.org/dwc/terms/materialEntityID, and as opposed to a particular digital record of a material sample) used for extracting nucleic acids, and subsequent sequencing. The identifier can refer either to the original material collected or to any derived sub-samples. The INSDC qualifiers /specimen_voucher, /bio_material, or /culture_collection may or may not share the same value as the source_mat_id field. For instance, the /specimen_voucher qualifier and source_mat_id may both contain ´UAM:Herps:14´, referring to both the specimen voucher and sampled tissue with the same identifier. However, the /culture_collection qualifier may refer to a value from an initial culture (e.g., ATCC:11775) while source_mat_id would refer to an identifier from some derived culture from which the nucleic acids were extracted (e.g., xatc123 or ark:/2154/R2).
Notes	The value in this field MAY refer to a dwc:MaterialEntity within or external to the dataset in which this record originated.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	https://w3id.org/mixs/0000026

pathogenicity
Title (Label)	pathogenicity
Namespace	mixs
Table	Molecular Protocol
Description	To what is the entity pathogenic.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000027

biotic_relationship
Title (Label)	biotic_relationship
Namespace	mixs
Table	Molecular Protocol
Description	Description of relationship(s) between the subject organism and other organism(s) it is associated with. E.g., parasite on species X; mutualist with species Y. The target organism is the subject of the relationship, and the other organism(s) is the object.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000028

specific_host
Title (Label)	specific_host
Namespace	mixs
Table	Molecular Protocol
Description	If there is a host involved, please provide its taxid (or environmental if not actually isolated from the dead or alive host - i.e. a pathogen could be isolated from a swipe of a bench etc) and report whether it is a laboratory or natural host).
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000029

host_spec_range
Title (Label)	host_spec_range
Namespace	mixs
Table	Molecular Protocol
Description	The NCBI taxonomy identifier of the specific host if it is known.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000030

host_disease_stat
Title (Label)	host_disease_stat
Namespace	mixs
Table	Molecular Protocol
Description	List of diseases with which the host has been diagnosed; can include multiple diagnoses. The value of the field depends on host; for humans the terms should be chosen from the DO (Human Disease Ontology) at https://www.disease-ontology.org, non-human host diseases are free text.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000031

trophic_level
Title (Label)	trophic_level
Namespace	mixs
Table	Molecular Protocol
Description	Trophic levels are the feeding position in a food chain. Microbes can be a range of producers (e.g., chemolithotroph).
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000032

propagation
Title (Label)	propagation
Namespace	mixs
Table	Molecular Protocol
Description	This field is specific to different taxa. For phages: lytic/lysogenic, for plasmids: incompatibility group, for eukaryotes: sexual/asexual (Note: there is the strong opinion to name phage propagation obligately lytic or temperate, therefore we also give this choice.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000033

encoded_traits
Title (Label)	encoded_traits
Namespace	mixs
Table	Molecular Protocol
Description	Should include key traits like antibiotic resistance or xenobiotic degradation phenotypes for plasmids, converting genes for phage.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000034

rel_to_oxygen
Title (Label)	rel_to_oxygen
Namespace	mixs
Table	Molecular Protocol
Description	Is this organism an aerobe, anaerobe? Please note that aerobic and anaerobic are valid descriptors for microbial environments.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000015

isol_growth_condt
Title (Label)	isol_growth_condt
Namespace	mixs
Table	Molecular Protocol
Description	Publication reference in the form of pubmed ID (pmid), digital object identifier (doi) or url for isolation and growth condition specifications of the organism/material.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000003

samp_collect_device
Title (Label)	sample collection device
Namespace	mixs
Table	Molecular Protocol
Description	The device used to collect an environmental sample.
Notes	Recommended best practice is to use a controlled vocabulary such as the entities listed under specimen collection device (http://purl.obolibrary.org/obo/OBI_0002814) in the Ontology for Biomedical Investigations.
Examples	`air filter`, `malaise trap`, `surface swab`
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000002

samp_collect_method
Title (Label)	samp_collect_method
Namespace	mixs
Table	Molecular Protocol
Description	The method employed for collecting the sample.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0001225

samp_mat_process
Title (Label)	samp_mat_process
Namespace	mixs
Table	Molecular Protocol
Description	Any processing applied to the sample during or after retrieving the sample from environment. This field accepts OBI, for a browser of OBI (v 2018-02-12) terms please see http://purl.bioontology.org/ontology/OBI.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000016

size_frac
Title (Label)	size_frac
Namespace	mixs
Table	Molecular Protocol
Description	Filtering pore size used in sample preparation.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000017

samp_size
Title (Label)	samp_size
Namespace	mixs
Table	Molecular Protocol
Description	Amount or size of sample (volume, mass or area) that was collected.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000001

samp_vol_we_dna_ext
Title (Label)	samp_vol_we_dna_ext
Namespace	mixs
Table	Molecular Protocol
Description	Volume (ml) or mass (g) of total collected sample processed for DNA extraction. Note: total sample collected should be entered under the term Sample Size (MIXS:0000001).
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000111

source_uvig
Title (Label)	source_uvig
Namespace	mixs
Table	Molecular Protocol
Description	Type of dataset from which the UViG was obtained.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000035

virus_enrich_appr
Title (Label)	virus_enrich_appr
Namespace	mixs
Table	Molecular Protocol
Description	List of approaches used to enrich the sample for viruses, if any.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000036

nucl_acid_ext
Title (Label)	nucl_acid_ext
Namespace	mixs
Table	Molecular Protocol
Description	A link to a literature reference, electronic resource or a standard operating procedure (SOP), that describes the material separation to recover the nucleic acid fraction from a sample.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000037

nucl_acid_amp
Title (Label)	nucl_acid_amp
Namespace	mixs
Table	Molecular Protocol
Description	A link to a literature reference, electronic resource or a standard operating procedure (SOP), that describes the enzymatic amplification (PCR, TMA, NASBA) of specific nucleic acids.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000038

lib_size
Title (Label)	lib_size
Namespace	mixs
Table	Molecular Protocol
Description	Total number of clones in the library prepared for the project.
Type	integer
dcterms:isVersionOf	https://w3id.org/mixs/0000039

lib_reads_seqd
Title (Label)	lib_reads_seqd
Namespace	mixs
Table	Molecular Protocol
Description	Total number of clones sequenced from the library.
Type	integer
dcterms:isVersionOf	https://w3id.org/mixs/0000040

lib_layout
Title (Label)	lib_layout
Namespace	mixs
Table	Molecular Protocol
Description	Specify whether to expect single, paired, or other configuration of reads.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000041

lib_vector
Title (Label)	lib_vector
Namespace	mixs
Table	Molecular Protocol
Description	Cloning vector type(s) used in construction of libraries.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000042

lib_screen
Title (Label)	lib_screen
Namespace	mixs
Table	Molecular Protocol
Description	Specific enrichment or screening methods applied before and/or after creating libraries.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000043

target_gene
Title (Label)	target_gene
Namespace	mixs
Table	Molecular Protocol
Description	Targeted gene or locus name for marker gene studies.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000044

target_subfragment
Title (Label)	target_subfragment
Namespace	mixs
Table	Molecular Protocol
Description	Name of subfragment of a gene or locus. Important to e.g., identify special regions on marker genes like V6 on 16S rRNA.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000045

pcr_primers
Title (Label)	pcr_primers
Namespace	mixs
Table	Molecular Protocol
Description	PCR primers that were used to amplify the sequence of the targeted gene, locus or subfragment. This field should contain all the primers used for a single PCR reaction if multiple forward or reverse primers are present in a single PCR reaction. The primer sequence should be reported in uppercase letters.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000046

mid
Title (Label)	mid
Namespace	mixs
Table	Molecular Protocol
Description	Molecular barcodes, called Multiplex Identifiers (MIDs), that are used to specifically tag unique samples in a sequencing run. Sequence should be reported in uppercase letters.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000047

adapters
Title (Label)	adapters
Namespace	mixs
Table	Molecular Protocol
Description	Adapters provide priming sequences for both amplification and sequencing of the sample-library fragments. Both adapters should be reported; in uppercase letters.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000048

pcr_cond
Title (Label)	pcr_cond
Namespace	mixs
Table	Molecular Protocol
Description	Description of reaction conditions and components of PCR in the form of ´initial denaturation:94degC_1.5min; annealing=...´.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000049

seq_meth
Title (Label)	seq_meth
Namespace	mixs
Table	Molecular Protocol
Description	Sequencing method used; e.g., Sanger, ABI-solid.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000050

seq_quality_check
Title (Label)	seq_quality_check
Namespace	mixs
Table	Molecular Protocol
Description	Indicate if the sequence has been called by automatic systems (none) or undergone a manual editing procedure (e.g., by inspecting the raw data or chromatograms). Applied only for sequences that are not submitted to SRA,ENA or DRA.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000051

chimera_check
Title (Label)	chimera_check
Namespace	mixs
Table	Molecular Protocol
Description	A chimeric sequence, or chimera for short, is a sequence comprised of two or more phylogenetically distinct parent sequences. Chimeras are usually PCR artifacts thought to occur when a prematurely terminated amplicon reanneals to a foreign DNA strand and is copied to completion in the following PCR cycles. The point at which the chimeric sequence changes from one parent to the next is called the breakpoint or conversion point.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000052

tax_ident
Title (Label)	tax_ident
Namespace	mixs
Table	Molecular Protocol
Description	The phylogenetic marker(s) used to assign an organism name to the SAG or MAG.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000053

assembly_qual
Title (Label)	assembly_qual
Namespace	mixs
Table	Molecular Protocol
Description	The assembly quality category is based on sets of criteria outlined for each assembly quality category. For MISAG/MIMAG; Finished: Single, validated, contiguous sequence per replicon without gaps or ambiguities with a consensus error rate equivalent to Q50 or better. High Quality Draft:Multiple fragments where gaps span repetitive regions. Presence of the 23S, 16S and 5S rRNA genes and at least 18 tRNAs. Medium Quality Draft:Many fragments with little to no review of assembly other than reporting of standard assembly statistics. Low Quality Draft:Many fragments with little to no review of assembly other than reporting of standard assembly statistics. Assembly statistics include, but are not limited to total assembly size, number of contigs, contig N50/L50, and maximum contig length. For MIUVIG; Finished: Single, validated, contiguous sequence per replicon without gaps or ambiguities, with extensive manual review and editing to annotate putative gene functions and transcriptional units. High-quality draft genome: One or multiple fragments, totaling ≥ 90% of the expected genome or replicon sequence or predicted complete. Genome fragment(s): One or multiple fragments, totalling < 90% of the expected genome or replicon sequence, or for which no genome size could be estimated.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000056

assembly_name
Title (Label)	assembly_name
Namespace	mixs
Table	Molecular Protocol
Description	Name/version of the assembly provided by the submitter that is used in the genome browsers and in the community.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000057

assembly_software
Title (Label)	assembly_software
Namespace	mixs
Table	Molecular Protocol
Description	Tool(s) used for assembly, including version number and parameters.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000058

annot
Title (Label)	annot
Namespace	mixs
Table	Molecular Protocol
Description	Tool used for annotation, or for cases where annotation was provided by a community jamboree or model organism database rather than by a specific submitter.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000059

number_contig
Title (Label)	number_contig
Namespace	mixs
Table	Molecular Protocol
Description	Total number of contigs in the cleaned/submitted assembly that makes up a given genome, SAG, MAG, or UViG.
Type	integer
dcterms:isVersionOf	https://w3id.org/mixs/0000060

feat_pred
Title (Label)	feat_pred
Namespace	mixs
Table	Molecular Protocol
Description	Method used to predict UViGs features such as ORFs, integration site, etc.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000061

ref_db
Title (Label)	ref_db
Namespace	mixs
Table	Molecular Protocol
Description	List of database(s) used for ORF annotation, along with version number and reference to website or publication.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000062

sim_search_meth
Title (Label)	sim_search_meth
Namespace	mixs
Table	Molecular Protocol
Description	Tool used to compare ORFs with database, along with version and cutoffs used.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000063

tax_class
Title (Label)	tax_class
Namespace	mixs
Table	Molecular Protocol
Description	Method used for taxonomic classification, along with reference database used, classification rank, and thresholds used to classify new genomes.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000064

_16s_recover
Title (Label)	_16s_recover
Namespace	mixs
Table	Molecular Protocol
Description	Can a 16S gene be recovered from the submitted SAG or MAG?.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000065

_16s_recover_software
Title (Label)	_16s_recover_software
Namespace	mixs
Table	Molecular Protocol
Description	Tools used for 16S rRNA gene extraction.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000066

trnas
Title (Label)	trnas
Namespace	mixs
Table	Molecular Protocol
Description	The total number of tRNAs identified from the SAG or MAG.
Type	integer
dcterms:isVersionOf	https://w3id.org/mixs/0000067

trna_ext_software
Title (Label)	trna_ext_software
Namespace	mixs
Table	Molecular Protocol
Description	Tools used for tRNA identification.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000068

compl_score
Title (Label)	compl_score
Namespace	mixs
Table	Molecular Protocol
Description	Completeness score is typically based on either the fraction of markers found as compared to a database or the percent of a genome found as compared to a closely related reference genome. High Quality Draft: >90%, Medium Quality Draft: >50%, and Low Quality Draft: < 50% should have the indicated completeness scores.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000069

compl_software
Title (Label)	compl_software
Namespace	mixs
Table	Molecular Protocol
Description	Tools used for completion estimate, i.e. checkm, anvi´o, busco.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000070

compl_appr
Title (Label)	compl_appr
Namespace	mixs
Table	Molecular Protocol
Description	The approach used to determine the completeness of a given SAG or MAG, which would typically make use of a set of conserved marker genes or a closely related reference genome. For UViG completeness, include reference genome or group used, and contig feature suggesting a complete genome.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000071

contam_score
Title (Label)	contam_score
Namespace	mixs
Table	Molecular Protocol
Description	The contamination score is based on the fraction of single-copy genes that are observed more than once in a query genome. The following scores are acceptable for; High Quality Draft: < 5%, Medium Quality Draft: < 10%, Low Quality Draft: < 10%. Contamination must be below 5% for a SAG or MAG to be deposited into any of the public databases.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000072

contam_screen_input
Title (Label)	contam_screen_input
Namespace	mixs
Table	Molecular Protocol
Description	The type of sequence data used as input.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000005

contam_screen_param
Title (Label)	contam_screen_param
Namespace	mixs
Table	Molecular Protocol
Description	Specific parameters used in the decontamination software, such as reference database, coverage, and kmers. Combinations of these parameters may also be used, i.e. kmer and coverage, or reference database and kmer.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000073

decontam_software
Title (Label)	decontam_software
Namespace	mixs
Table	Molecular Protocol
Description	Tool(s) used in contamination screening.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000074

sort_tech
Title (Label)	sort_tech
Namespace	mixs
Table	Molecular Protocol
Description	Method used to sort/isolate cells or particles of interest.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000075

single_cell_lysis_appr
Title (Label)	single_cell_lysis_appr
Namespace	mixs
Table	Molecular Protocol
Description	Method used to free DNA from interior of the cell(s) or particle(s).
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000076

single_cell_lysis_prot
Title (Label)	single_cell_lysis_prot
Namespace	mixs
Table	Molecular Protocol
Description	Name of the kit or standard protocol used for cell(s) or particle(s) lysis.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000054

wga_amp_appr
Title (Label)	wga_amp_appr
Namespace	mixs
Table	Molecular Protocol
Description	Method used to amplify genomic DNA in preparation for sequencing.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000055

wga_amp_kit
Title (Label)	wga_amp_kit
Namespace	mixs
Table	Molecular Protocol
Description	Kit used to amplify genomic DNA in preparation for sequencing.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000006

bin_param
Title (Label)	bin_param
Namespace	mixs
Table	Molecular Protocol
Description	The parameters that have been applied during the extraction of genomes from metagenomic datasets.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000077

bin_software
Title (Label)	bin_software
Namespace	mixs
Table	Molecular Protocol
Description	Tool(s) used for the extraction of genomes from metagenomic datasets.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000078

reassembly_bin
Title (Label)	reassembly_bin
Namespace	mixs
Table	Molecular Protocol
Description	Has an assembly been performed on a genome bin extracted from a metagenomic assembly?.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000079

mag_cov_software
Title (Label)	mag_cov_software
Namespace	mixs
Table	Molecular Protocol
Description	Tool(s) used to determine the genome coverage if coverage is used as a binning parameter in the extraction of genomes from metagenomic datasets.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000080

vir_ident_software
Title (Label)	vir_ident_software
Namespace	mixs
Table	Molecular Protocol
Description	Tool(s) used for the identification of UViG as a viral genome, software or protocol name including version number, parameters, and cutoffs used.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000081

pred_genome_type
Title (Label)	pred_genome_type
Namespace	mixs
Table	Molecular Protocol
Description	Type of genome predicted for the UViG.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000082

pred_genome_struc
Title (Label)	pred_genome_struc
Namespace	mixs
Table	Molecular Protocol
Description	Expected structure of the viral genome.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000083

detec_type
Title (Label)	detec_type
Namespace	mixs
Table	Molecular Protocol
Description	Type of UViG detection.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000084

otu_class_appr
Title (Label)	otu_class_appr
Namespace	mixs
Table	Molecular Protocol
Description	Cutoffs and approach used when clustering new UViGs in "species-level" OTUs. Note that results from standard 95% ANI / 85% AF clustering should be provided alongside OTUS defined from another set of thresholds, even if the latter are the ones primarily used during the analysis.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000085

otu_seq_comp_appr
Title (Label)	otu_seq_comp_appr
Namespace	mixs
Table	Molecular Protocol
Description	Tool and thresholds used to compare sequences when computing "species-level" OTUs.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000086

otu_db
Title (Label)	otu_db
Namespace	mixs
Table	Molecular Protocol
Description	Reference database (i.e. sequences not generated as part of the current study) used to cluster new genomes in "species-level" OTUs, if any.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000087

host_pred_appr
Title (Label)	host_pred_appr
Namespace	mixs
Table	Molecular Protocol
Description	Tool or approach used for host prediction.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000088

host_pred_est_acc
Title (Label)	host_pred_est_acc
Namespace	mixs
Table	Molecular Protocol
Description	For each tool or approach used for host prediction, estimated false discovery rates should be included, either computed de novo or from the literature.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000089

associated_resource
Title (Label)	associated_resource
Namespace	mixs
Table	Molecular Protocol
Description	A related resource that is referenced, cited, or otherwise associated to the sequence.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000091

sop
Title (Label)	sop
Namespace	mixs
Table	Molecular Protocol
Description	Standard operating procedures used in assembly and/or annotation of genomes, metagenomes or environmental sequences.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000090

pcr_primer_forward
Title (Label)	pcr_primer_forward
Namespace	gbif
Table	Molecular Protocol
Description	Forward PCR primer that were used to amplify the sequence of the targeted gene, locus or subfragment. If multiple multiple forward or reverse primers are present in a single PCR reaction, there should be a full row for each of these linked to the same dwc:Occurrence. The primer sequence should be reported in uppercase letters.
Type	string
dcterms:isVersionOf	http://rs.gbif.org/terms/pcr_primer_forward

pcr_primer_reverse
Title (Label)	pcr_primer_reverse
Namespace	gbif
Table	Molecular Protocol
Description	Reverse PCR primer that were used to amplify the sequence of the targeted gene, locus or subfragment. If multiple multiple forward or reverse primers are present in a single PCR reaction, there should be a full row for each of these linked to the same dwc:Occurrence. The primer sequence should be reported in uppercase letters.
Type	string
dcterms:isVersionOf	http://rs.gbif.org/terms/pcr_primer_reverse

pcr_primer_name_forward
Title (Label)	pcr_primer_name_forward
Namespace	gbif
Table	Molecular Protocol
Description	Name of the forward PCR primer that were used to amplify the sequence of the targeted gene, locus or subfragment. If multiple multiple forward or reverse primers are present in a single PCR reaction, there should be a full row for each of these linked to the same dwc:Occurrence.
Type	string
dcterms:isVersionOf	http://rs.gbif.org/terms/pcr_primer_name_forward

pcr_primer_name_reverse
Title (Label)	pcr_primer_name_reverse
Namespace	gbif
Table	Molecular Protocol
Description	Name of the reverse PCR primer that were used to amplify the sequence of the targeted gene, locus or subfragment. If multiple multiple forward or reverse primers are present in a single PCR reaction, there should be a full row for each of these linked to the same dwc:Occurrence.
Type	string
dcterms:isVersionOf	http://rs.gbif.org/terms/pcr_primer_name_reverse

pcr_primer_reference
Title (Label)	pcr_primer_reference
Namespace	gbif
Table	Molecular Protocol
Description	Reference for the PCR primers that were used to amplify the sequence of the targeted gene, locus or subfragment.
Type	string
dcterms:isVersionOf	http://rs.gbif.org/terms/pcr_primer_reference

sequence
Title (Label)	Sequence
Namespace	dwc
Table	Molecular Protocol
Description	A string representing nucleotide base pairs.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/sequence

concentration
Title (Label)	Concentration (DNA)
Namespace	ggbn
Table	Molecular Protocol
Description	Concentration of DNA (weight ng/volume µl).
Notes	in ABCD this element has stringUnit as attribute (example ng/µl); in DarwinCore this element has to be used together with ggbn:concentrationUnit
Examples	67.5
Type	number
dcterms:isVersionOf	http://data.ggbn.org/schemas/ggbn/terms/concentration

concentrationUnit
Title (Label)	Unit of Concentration (DNA)
Namespace	ggbn
Table	Molecular Protocol
Description	Unit used for concentration measurement (DNA)
Notes	in DarwinCore this element has to be used together with ggbn:concentration; this element is not required in ABCD (see ggbn:concentration for details)
Examples	ng/µl
Type	string
dcterms:isVersionOf	http://data.ggbn.org/schemas/ggbn/terms/concentrationUnit

methodDeterminationConcentrationAndRatios
Title (Label)	Method used for Determination of Concentration and Ratios of Absorbance (DNA)
Namespace	ggbn
Table	Molecular Protocol
Description	Description of method used for concentration measurement (DNA)
Examples	Nanodrop, Qubit
Type	string
dcterms:isVersionOf	http://data.ggbn.org/schemas/ggbn/terms/methodDeterminationConcentrationAndRatios

ratioOfAbsorbance260_230
Title (Label)	Ratio of Absorbance 260/230 (DNA)
Namespace	ggbn
Table	Molecular Protocol
Description	Ratio of absorbance at 260 nm and 230 nm assessing DNA purity (mostly secondary measure, indicates mainly EDTA, carbohydrates, phenol), (DNA samples only)
Examples	1.89
Type	number
dcterms:isVersionOf	http://data.ggbn.org/schemas/ggbn/terms/ratioOfAbsorbance260_230

ratioOfAbsorbance260_280
Title (Label)	Ratio of Absorbance 260/280 (DNA)
Namespace	ggbn
Table	Molecular Protocol
Description	Ratio of absorbance at 260 nm and 280 nm assessing DNA purity (mostly secondary measure, indicates mainly EDTA, carbohydrates, phenol), (DNA samples only)
Examples	1.8
Type	number
dcterms:isVersionOf	http://data.ggbn.org/schemas/ggbn/terms/ratioOfAbsorbance260_280

annealingTemp
Title (Label)	annealingTemp
Namespace	miqe
Table	Molecular Protocol
Description	The reaction temperature during the annealing phase of PCR.
Type	number
dcterms:isVersionOf	http://rs.gbif.org/terms/miqe/annealingTemp

annealingTempUnit
Title (Label)	annealingTempUnit
Namespace	miqe
Table	Molecular Protocol
Description	Measurement unit of the reaction temperature during the annealing phase of PCR.
Type	string
dcterms:isVersionOf	http://rs.gbif.org/terms/miqe/annealingTempUnit

probeReporter
Title (Label)	probeReporter
Namespace	miqe
Table	Molecular Protocol
Description	Type of fluorophore (reporter) used. Probe anneals within amplified target DNA. Polymerase activity degrades the probe that has annealed to the template, and the probe releases the fluorophore from it and breaks the proximity to the quencher, thus allowing fluorescence of the fluorophore.
Type	string
dcterms:isVersionOf	http://rs.gbif.org/terms/miqe/probeReporter

probeQuencher
Title (Label)	probeQuencher
Namespace	miqe
Table	Molecular Protocol
Description	Type of quencher used. The quencher molecule quenches the fluorescence emitted by the fluorophore when excited by the cycler’s light source As long as fluorophore and the quencher are in proximity, quenching inhibits any fluorescence signals.
Type	string
dcterms:isVersionOf	http://rs.gbif.org/terms/miqe/probeQuencher

ampliconSize
Title (Label)	ampliconSize
Namespace	miqe
Table	Molecular Protocol
Description	The length of the amplicon in basepairs.
Type	integer
dcterms:isVersionOf	http://rs.gbif.org/terms/miqe/ampliconSize

thresholdQuantificationCycle
Title (Label)	thresholdQuantificationCycle
Namespace	miqe
Table	Molecular Protocol
Description	Threshold for change in fluorescence signal between cycles.
Type	number
dcterms:isVersionOf	http://rs.gbif.org/terms/miqe/thresholdQuantificationCycle

baselineValue
Title (Label)	baselineValue
Namespace	miqe
Table	Molecular Protocol
Description	The number of cycles when fluorescence signal from the target amplification is below background fluorescence not originated from the real target amplification.
Type	integer
dcterms:isVersionOf	http://rs.gbif.org/terms/miqe/baselineValue

quantificationCycle
Title (Label)	quantificationCycle
Namespace	miqe
Table	Molecular Protocol
Description	The number of cycles required for the fluorescent signal to cross a given value threshold above the baseline. Quantification cycle (Cq), threshold cycle (Ct), crossing point (Cp), and take-off point (TOP) refer to the same value from the real-time instrument. Use of quantification cycle (Cq), is preferable according to the RDML (Real-Time PCR Data Markup Language) data standard (http://www.rdml.org).
Type	number
dcterms:isVersionOf	http://rs.gbif.org/terms/miqe/quantificationCycle

automaticThresholdQuantificationCycle
Title (Label)	automaticThresholdQuantificationCycle
Namespace	miqe
Table	Molecular Protocol
Description	Whether the threshold was set by the instrument or manually.
Type	boolean
dcterms:isVersionOf	http://rs.gbif.org/terms/miqe/automaticThresholdQuantificationCycle

automaticBaselineValue
Title (Label)	automaticBaselineValue
Namespace	miqe
Table	Molecular Protocol
Description	Whether the baseline value was set by the instrument or manually.
Type	string
dcterms:isVersionOf	http://rs.gbif.org/terms/miqe/automaticBaselineValue

contaminationAssessment
Title (Label)	contaminationAssessment
Namespace	miqe
Table	Molecular Protocol
Description	Whether DNA or RNA contamination assessment was done or not.
Type	string
dcterms:isVersionOf	http://rs.gbif.org/terms/miqe/contaminationAssessment

partitionVolume
Title (Label)	partitionVolume
Namespace	miqe
Table	Molecular Protocol
Description	An accurate estimation of partition volume. The sum of the partitions multiplied by the partition volume will enable the total volume of the reaction to be calculated.
Type	number
dcterms:isVersionOf	http://rs.gbif.org/terms/miqe/partitionVolume

partitionVolumeUnit
Title (Label)	partitionVolumeUnit
Namespace	miqe
Table	Molecular Protocol
Description	Unit used for partition volume.
Type	string
dcterms:isVersionOf	http://rs.gbif.org/terms/miqe/partitionVolumeUnit

estimatedNumberOfCopies
Title (Label)	estimatedNumberOfCopies
Namespace	miqe
Table	Molecular Protocol
Description	Number of target molecules per µl. Mean copies per partition (?) can be calculated using the number of partitions (n) and the estimated copy number in the total volume of all partitions (m) with a formula ?=m/n.
Type	integer
dcterms:isVersionOf	http://rs.gbif.org/terms/miqe/estimatedNumberOfCopies

amplificationReactionVolume
Title (Label)	amplificationReactionVolume
Namespace	miqe
Table	Molecular Protocol
Description	PCR reaction volume.
Type	number
dcterms:isVersionOf	http://rs.gbif.org/terms/miqe/amplificationReactionVolume

amplificationReactionVolumeUnit
Title (Label)	amplificationReactionVolumeUnit
Namespace	miqe
Table	Molecular Protocol
Description	Unit used for PCR reaction volume. Many of the instruments require preparation of a much larger initial sample volume than is actually analyzed.
Type	string
dcterms:isVersionOf	http://rs.gbif.org/terms/miqe/amplificationReactionVolumeUnit

pcr_analysis_software
Title (Label)	pcr_analysis_software
Namespace	miqe
Table	Molecular Protocol
Description	The program used to analyse the d(d)PCR runs.
Type	string
dcterms:isVersionOf	http://rs.gbif.org/terms/miqe/pcr_analysis_software

experimentalVariance
Title (Label)	experimentalVariance
Namespace	miqe
Table	Molecular Protocol
Description	Multiple biological replicates are encouraged to assess total experimental variation. When single dPCR experiments are performed, a minimal estimate of variance due to counting error alone must be calculated from the binomial (or suitable equivalent) distribution.
Type	string
dcterms:isVersionOf	http://rs.gbif.org/terms/miqe/experimentalVariance

pcr_primer_lod
Title (Label)	pcr_primer_lod
Namespace	miqe
Table	Molecular Protocol
Description	The assay’s ability to detect the target at low levels.
Type	string
dcterms:isVersionOf	http://rs.gbif.org/terms/miqe/pcr_primer_lod

pcr_primer_loq
Title (Label)	pcr_primer_loq
Namespace	miqe
Table	Molecular Protocol
Description	The assay’s ability to quantify copy number at low levels.
Type	string
dcterms:isVersionOf	http://rs.gbif.org/terms/miqe/pcr_primer_loq

Molecular Protocol Agent Role

Identifier: http://rs.tdwg.org/dwc-dp/1.0/molecular-protocol-agent-role

Description: A role filled by a dcterms:Agent with respect to a dwc:MolecularProtocol.

dcterms:isVersionOf: http://example.com/term-pending//molecular-protocol-agent-role

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
molecularProtocol_fk	role for	molecular-protocol	molecularProtocol_pk	foreign key	Yes	Yes
agent_fk	role holder	agent	agent_pk	foreign key	Yes	Yes

molecularProtocol_fk
Title (Label)	Molecular Protocol (Foreign Key)
Namespace	dwc
Table	Molecular Protocol Agent Role
Description	An identifier for a dwc:MolecularProtocol.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/molecularProtocolID

agent_fk
Title (Label)	Agent (Foreign Key)
Namespace	dwc
Table	Molecular Protocol Agent Role
Description	An identifier for a dcterms:Agent.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

agentRole
Title (Label)	Agent Role
Namespace	dwc
Table	Molecular Protocol Agent Role
Description	A category that best matches the nature of a role of a dcterms:Agent.
Notes	Recommended best practice is to use a controlled vocabulary for the roles appropriate to the class of resource a dcterms:AgentRole is related to.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResource

agentRoleIRI
Title (Label)	Agent Role IRI
Namespace	dwciri
Table	Molecular Protocol Agent Role
Description	An IRI of the controlled vocabulary value for a role of a dcterms:Agent.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResourceID

agentRoleSource
Title (Label)	Agent Role Source
Namespace	dc
Table	Molecular Protocol Agent Role
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:agentRole is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

agentRoleOrder
Title (Label)	Agent Role Order
Namespace	dwc
Table	Molecular Protocol Agent Role
Description	A numerical position of an AgentRole in a set of AgentRoles that have the same combination of agentRole, agentRoleIRI, agentRoleSource and related target identifier.
Notes	One could use dwc:agentRoleOrder to create an ordered list of collectors (dwc:agentRole = 'collector') for a dwc:MaterialEntity, for example. The first would have dwc:agentRoleOrder=1, the second would have dwc:agentRoleOrder=2.
Type	integer
Constraints	{"required": true, "minimum": 1}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentRoleOrder

agentRoleDate
Title (Label)	Agent Role Date
Namespace	dwc
Table	Molecular Protocol Agent Role
Description	An interval during which a dcterms:AgentRole was in effect.
Notes	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionEffectiveDate

Molecular Protocol Assertion

Identifier: http://rs.tdwg.org/dwc-dp/1.0/molecular-protocol-assertion

Description: A dwc:Assertion made by a dcterms:Agent about a dwc:MolecularProtocol.

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/MeasurementOrFact

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
assertionID				weak primary key	No	No
molecularProtocol_fk	about	molecular-protocol	molecularProtocol_pk	foreign key	Yes	Yes
assertionBy_fk	asserted by	agent	agent_pk	foreign key	Yes	No
assertionByID	asserted by	agent	agentID	weak foreign key	No	No
assertionProtocol_fk	followed	protocol	protocol_pk	foreign key	Yes	No

assertionID
Title (Label)	Assertion ID
Namespace	dwc
Table	Molecular Protocol Assertion
Description	An identifier for a dwc:Assertion.
Notes	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": true}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionID

molecularProtocol_fk
Title (Label)	Molecular Protocol (Foreign Key)
Namespace	dwc
Table	Molecular Protocol Assertion
Description	An identifier for a dwc:MolecularProtocol.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/molecularProtocolID

verbatimAssertionType
Title (Label)	Verbatim Assertion Type
Namespace	dwc
Table	Molecular Protocol Assertion
Description	A string representing the type of dwc:Assertion as it appeared in the original record.
Notes	This term is meant to allow the capture of an unaltered original name for a dwc:assertionType. This term is meant to be used in addition to dwc:assertionType, not instead of it.
Examples	`water_temp` `Fish biomass` `sampling net mesh size`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/verbatimAssertionType

assertionType
Title (Label)	Assertion Type
Namespace	dwc
Table	Molecular Protocol Assertion
Description	A category that best matches the nature of a dwc:Assertion.
Notes	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`tail length` `temperature` `trap line length` `survey area` `trap type`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionType

assertionTypeIRI
Title (Label)	Assertion Type IRI
Namespace	dwciri
Table	Molecular Protocol Assertion
Description	An IRI of a controlled vocabulary value for a type of dwc:Assertion.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/iri/measurementType

assertionTypeSource
Title (Label)	Assertion Type Source
Namespace	dc
Table	Molecular Protocol Assertion
Description	A reference to the controlled vocabulary in which the definition of a value in dwc:assertionType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionMadeDate
Title (Label)	Assertion Made Date
Namespace	dwc
Table	Molecular Protocol Assertion
Description	A date on which a dwc:Assertion was created.
Notes	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionMadeDate

assertionEffectiveDate
Title (Label)	Assertion Effective Date
Namespace	dwc
Table	Molecular Protocol Assertion
Description	A date-time or time interval during which an asserted state or measurement was deemed to be in effect.
Notes	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionEffectiveDate

assertionValue
Title (Label)	Assertion Value
Namespace	dwc
Table	Molecular Protocol Assertion
Description	An asserted value.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionValue

assertionValueIRI
Title (Label)	Assertion Value IRI
Namespace	dwciri
Table	Molecular Protocol Assertion
Description	An IRI of the controlled vocabulary value for a value of a dwc:Assertion.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/iri/measurementValue

assertionValueSource
Title (Label)	Assertion Value Source
Namespace	dc
Table	Molecular Protocol Assertion
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:assertionValue is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionUnit
Title (Label)	Assertion Unit
Namespace	dwc
Table	Molecular Protocol Assertion
Description	Unit associated with the value in dwc:assertionValue.
Notes	Recommended best practice is to use a controlled vocabulary such as the Ontology of Units of Measure http://www.wurvoc.org/vocabularies/om-1.8/ of SI units, derived units, or other non-SI units accepted for use within the SI. For units that are composed of multiple parts, use the patterns as given in "A Primer for Communicating Mathematics via Plain Text" (https://cse.sc.edu/~fenner/latex-ASCII.pdf) by Stephen Fenner (e.g., `g/cm^3` for grams per cubic centimeter). For other units, provide the value as a recognizable standard (e.g., '%') or written out in full and in the plural (e.g., `individuals`). It is fine to provide non-SI units in the original language of the dataset.
Examples	`m` `s` `g` `ml`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionUnit

assertionUnitIRI
Title (Label)	Assertion Unit IRI
Namespace	dwciri
Table	Molecular Protocol Assertion
Description	An IRI of a controlled vocabulary value for the unit of a dwc:assertionValue.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/iri/assertionUnit

assertionUnitSource
Title (Label)	Assertion Unit Source
Namespace	dc
Table	Molecular Protocol Assertion
Description	A reference to a controlled vocabulary in which the definition of the value in dwc:assertionUnit is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionError
Title (Label)	Assertion Error
Namespace	dwc
Table	Molecular Protocol Assertion
Description	A description of the potential error associated with a dwc:assertionValue.
Examples	`0.01` `normal distribution with variation of 2 m`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionError

assertionBy
Title (Label)	Assertion By
Namespace	dwc
Table	Molecular Protocol Assertion
Description	A list (concatenated and separated) of names of dcterms:Agents responsible for making a dwc:Assertion.
Notes	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionBy

assertionBy_fk
Title (Label)	Assertion By (Foreign Key)
Namespace	dwc
Table	Molecular Protocol Assertion
Description	An identifier for a dcterms:Agent responsible for making a dwc:Assertion.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

assertionByID
Title (Label)	Assertion By ID
Namespace	dwc
Table	Molecular Protocol Assertion
Description	An identifier for a dcterms:Agent responsible for making a dwc:Assertion.
Notes	The value in this field MAY refer to a dcterms:Agent within or external to the dataset in which this record originated.
Examples	`https://orcid.org/0000-0002-1825-0097`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

assertionProtocols
Title (Label)	Assertion Protocols
Namespace	dwc
Table	Molecular Protocol Assertion
Description	Names of, references to, or descriptions of dwc:Protocols used in making a dwc:Assertion.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionProtocols

assertionProtocol_fk
Title (Label)	Assertion Protocol (Foreign Key)
Namespace	dwc
Table	Molecular Protocol Assertion
Description	An identifier for a dwc:Protocol used to make a dwc:Assertion.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/protocolID

assertionReferences
Title (Label)	Assertion References
Namespace	dwc
Table	Molecular Protocol Assertion
Description	A list (concatenated and separated) of dcterms:BibliographicResources associated with a dwc:Assertion.
Notes	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionReferences

assertionRemarks
Title (Label)	Assertion Remarks
Namespace	dwc
Table	Molecular Protocol Assertion
Description	Comments or notes about a dwc:Assertion.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionRemarks

Molecular Protocol Reference

Identifier: http://rs.tdwg.org/dwc-dp/1.0/molecular-protocol-reference

Description: A dcterms:BibliographicResource related to a dwc:MolecularProtocol.

dcterms:isVersionOf: http://example.com/term-pending//molecular-protocol-reference

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
reference_fk	mentioned in	bibliographic-resource	reference_pk	foreign key	Yes	No
molecularProtocol_fk	mentioned	molecular-protocol	molecularProtocol_pk	foreign key	Yes	Yes

reference_fk
Title (Label)	Reference ID (Foreign Key)
Namespace	dwc
Table	Molecular Protocol Reference
Description	An identifier for a dcterms:BibliographicResource.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/referenceID

molecularProtocol_fk
Title (Label)	Molecular Protocol (Foreign Key)
Namespace	dwc
Table	Molecular Protocol Reference
Description	An identifier for a dwc:MolecularProtocol.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/molecularProtocolID

relationshipType
Title (Label)	Relationship Type
Namespace	dwc
Table	Molecular Protocol Reference
Description	A relationship of a subject resource to a dcterms:BibliographicResource.
Notes	Recommended best practice is to use a controlled vocabulary.
Examples	`cited in` `referenced`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResource

Nucleotide Analysis

Identifier: http://rs.tdwg.org/dwc-dp/1.0/nucleotide-analysis

Description: A link between a dwc:NucleotideSequence and a dwc:Event and a dwc:MaterialEntity from which it was derived, using a specified dwc:Protocol.

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/NucleotideAnalysis

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
nucleotideAnalysis_pk				primary key	Yes	Yes
nucleotideAnalysisID				weak primary key	No	No
event_fk	material collected during	event	event_pk	foreign key	Yes	No
molecularProtocol_fk	followed	molecular-protocol	molecularProtocol_pk	foreign key	Yes	Yes
nucleotideSequence_fk	produced	nucleotide-sequence	nucleotideSequence_pk	foreign key	Yes	No
materialEntity_fk	based on	material	materialEntity_pk	foreign key	Yes	No

nucleotideAnalysis_pk
Title (Label)	Nucleotide Analysis (Primary Key)
Namespace	dcterms
Table	Nucleotide Analysis
Description	A unique identifier for a dwc:NucleotideAnalysis.
Notes	The value in this field MAY be changed in aggregation to guarantee uniqueness.
Type	string
Constraints	{"required": true, "unique": true}
dcterms:isVersionOf	http://purl.org/dc/terms/identifier

nucleotideAnalysisID
Title (Label)	Nucleotide Analysis ID
Namespace	dcterms
Table	Nucleotide Analysis
Description	An identifier for a dwc:NucleotideAnalysis.
Notes	The value in this field MUST be preserved in aggregation. Recommended best practice is to use a globally unique identifier.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/identifier

event_fk
Title (Label)	Event (Foreign Key)
Namespace	dwc
Table	Nucleotide Analysis
Description	An identifier for a dwc:Event.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/eventID

molecularProtocol_fk
Title (Label)	Molecular Protocol (Foreign Key)
Namespace	dwc
Table	Nucleotide Analysis
Description	An identifier for a dwc:MolecularProtocol.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/molecularProtocolID

nucleotideSequence_fk
Title (Label)	Nucleotide Sequence (Foreign Key)
Namespace	dcterms
Table	Nucleotide Analysis
Description	An identifier for a dwc:NucleotideSequence.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://purl.org/dc/terms/identifier

materialEntity_fk
Title (Label)	Material Entity (Foreign Key)
Namespace	dwc
Table	Nucleotide Analysis
Description	An identifier for a dwc:MaterialEntity.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/materialEntityID

readCount
Title (Label)	Read Count
Namespace	dwc
Table	Nucleotide Analysis
Description	The number of reads obtained for a processed dwc:NucleotideSequence during a dwc:NucleotideAnalysis.
Examples	`325` `73591` `8302`
Type	integer
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/readCount

processedTotalReadCount
Title (Label)	Processed Total Read Count
Namespace	dwc
Table	Nucleotide Analysis
Description	The total number of reads obtained for a processed dwc:NucleotideSequence during a dwc:NucleotideAnalysis.
Examples	`50638` `345987` `764032`
Type	integer
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/processedTotalReadCount

rawTotalReadCount
Title (Label)	Raw Total Read Count
Namespace	dwc
Table	Nucleotide Analysis
Description	A total number of raw, unprocessed reads from a dwc:NucleotideAnalysis.
Examples	`70463` `150456` `586031`
Type	integer
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/rawTotalReadCount

Nucleotide Analysis Assertion

Identifier: http://rs.tdwg.org/dwc-dp/1.0/nucleotide-analysis-assertion

Description: A dwc:Assertion made by a dcterms:Agent about a dwc:NucleotideSequence.

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/MeasurementOrFact

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
assertionID				weak primary key	No	No
nucleotideAnalysis_fk	about	nucleotide-analysis	nucleotideAnalysis_pk	foreign key	Yes	Yes
assertionBy_fk	asserted by	agent	agent_pk	foreign key	Yes	No
assertionByID	asserted by	agent	agentID	weak foreign key	No	No
assertionProtocol_fk	followed	protocol	protocol_pk	foreign key	Yes	No

assertionID
Title (Label)	Assertion ID
Namespace	dwc
Table	Nucleotide Analysis Assertion
Description	An identifier for a dwc:Assertion.
Notes	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": true}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionID

nucleotideAnalysis_fk
Title (Label)	Nucleotide Analysis (Foreign Key)
Namespace	dcterms
Table	Nucleotide Analysis Assertion
Description	An identifier for a dwc:NucleotideAnalysis.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://purl.org/dc/terms/identifier

verbatimAssertionType
Title (Label)	Verbatim Assertion Type
Namespace	dwc
Table	Nucleotide Analysis Assertion
Description	A string representing the type of dwc:Assertion as it appeared in the original record.
Notes	This term is meant to allow the capture of an unaltered original name for a dwc:assertionType. This term is meant to be used in addition to dwc:assertionType, not instead of it.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/verbatimAssertionType

assertionType
Title (Label)	Assertion Type
Namespace	dwc
Table	Nucleotide Analysis Assertion
Description	A category that best matches the nature of a dwc:Assertion.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionType

assertionTypeIRI
Title (Label)	Assertion Type IRI
Namespace	dwciri
Table	Nucleotide Analysis Assertion
Description	An IRI of a controlled vocabulary value for a type of dwc:Assertion.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/iri/measurementType

assertionTypeSource
Title (Label)	Assertion Type Source
Namespace	dc
Table	Nucleotide Analysis Assertion
Description	A reference to the controlled vocabulary in which the definition of a value in dwc:assertionType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionMadeDate
Title (Label)	Assertion Made Date
Namespace	dwc
Table	Nucleotide Analysis Assertion
Description	A date on which a dwc:Assertion was created.
Notes	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionMadeDate

assertionEffectiveDate
Title (Label)	Assertion Effective Date
Namespace	dwc
Table	Nucleotide Analysis Assertion
Description	A date-time or time interval during which an asserted state or measurement was deemed to be in effect.
Notes	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionEffectiveDate

assertionValue
Title (Label)	Assertion Value
Namespace	dwc
Table	Nucleotide Analysis Assertion
Description	An asserted value.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionValue

assertionValueIRI
Title (Label)	Assertion Value IRI
Namespace	dwciri
Table	Nucleotide Analysis Assertion
Description	An IRI of the controlled vocabulary value for a value of a dwc:Assertion.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/iri/measurementValue

assertionValueSource
Title (Label)	Assertion Value Source
Namespace	dc
Table	Nucleotide Analysis Assertion
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:assertionValue is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionUnit
Title (Label)	Assertion Unit
Namespace	dwc
Table	Nucleotide Analysis Assertion
Description	Unit associated with the value in dwc:assertionValue.
Notes	Recommended best practice is to use a controlled vocabulary such as the Ontology of Units of Measure http://www.wurvoc.org/vocabularies/om-1.8/ of SI units, derived units, or other non-SI units accepted for use within the SI. For units that are composed of multiple parts, use the patterns as given in "A Primer for Communicating Mathematics via Plain Text" (https://cse.sc.edu/~fenner/latex-ASCII.pdf) by Stephen Fenner (e.g., `g/cm^3` for grams per cubic centimeter). For other units, provide the value as a recognizable standard (e.g., '%') or written out in full and in the plural (e.g., `individuals`). It is fine to provide non-SI units in the original language of the dataset.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionUnit

assertionUnitIRI
Title (Label)	Assertion Unit IRI
Namespace	dwciri
Table	Nucleotide Analysis Assertion
Description	An IRI of a controlled vocabulary value for the unit of a dwc:assertionValue.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/iri/assertionUnit

assertionUnitSource
Title (Label)	Assertion Unit Source
Namespace	dc
Table	Nucleotide Analysis Assertion
Description	A reference to a controlled vocabulary in which the definition of the value in dwc:assertionUnit is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionError
Title (Label)	Assertion Error
Namespace	dwc
Table	Nucleotide Analysis Assertion
Description	A description of the potential error associated with a dwc:assertionValue.
Examples	`0.01` `normal distribution with variation of 2 m`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionError

assertionBy
Title (Label)	Assertion By
Namespace	dwc
Table	Nucleotide Analysis Assertion
Description	A list (concatenated and separated) of names of dcterms:Agents responsible for making a dwc:Assertion.
Notes	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionBy

assertionBy_fk
Title (Label)	Assertion By (Foreign Key)
Namespace	dwc
Table	Nucleotide Analysis Assertion
Description	An identifier for a dcterms:Agent responsible for making a dwc:Assertion.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

assertionByID
Title (Label)	Assertion By ID
Namespace	dwc
Table	Nucleotide Analysis Assertion
Description	An identifier for a dcterms:Agent responsible for making a dwc:Assertion.
Notes	The value in this field MAY refer to a dcterms:Agent within or external to the dataset in which this record originated.
Examples	`https://orcid.org/0000-0002-1825-0097`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

assertionProtocols
Title (Label)	Assertion Protocols
Namespace	dwc
Table	Nucleotide Analysis Assertion
Description	Names of, references to, or descriptions of dwc:Protocols used in making a dwc:Assertion.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionProtocols

assertionProtocol_fk
Title (Label)	Assertion Protocol (Foreign Key)
Namespace	dwc
Table	Nucleotide Analysis Assertion
Description	An identifier for a dwc:Protocol used to make a dwc:Assertion.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/protocolID

assertionReferences
Title (Label)	Assertion References
Namespace	dwc
Table	Nucleotide Analysis Assertion
Description	A list (concatenated and separated) of dcterms:BibliographicResources associated with a dwc:Assertion.
Notes	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionReferences

assertionRemarks
Title (Label)	Assertion Remarks
Namespace	dwc
Table	Nucleotide Analysis Assertion
Description	Comments or notes about a dwc:Assertion.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionRemarks

Nucleotide Sequence

Identifier: http://rs.tdwg.org/dwc-dp/1.0/nucleotide-sequence

Description: A digital representation of a nucleotide sequence.

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/NucleotideSequence

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
nucleotideSequence_pk				primary key	Yes	Yes
nucleotideSequenceID				weak primary key	No	No

nucleotideSequence_pk
Title (Label)	Nucleotide Sequence (Primary Key)
Namespace	dcterms
Table	Nucleotide Sequence
Description	A unique identifier for a dwc:NucleotideSequence.
Notes	The value in this field MAY be changed in aggregation to guarantee uniqueness.
Type	string
Constraints	{"required": true, "unique": true}
dcterms:isVersionOf	http://purl.org/dc/terms/identifier

nucleotideSequenceID
Title (Label)	Nucleotide Sequence ID
Namespace	dcterms
Table	Nucleotide Sequence
Description	An identifier for a dwc:NucleotideSequence.
Notes	The value in this field MUST be preserved in aggregation. Recommended best practice is to use a globally unique identifier.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/identifier

sequence
Title (Label)	Sequence
Namespace	dwc
Table	Nucleotide Sequence
Description	A string representing nucleotide base pairs.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/sequence

nucleotideSequenceRemarks
Title (Label)	Nucleotide Sequence Remarks
Namespace	dwc
Table	Nucleotide Sequence
Description	Comments or notes about a dwc:NucleotideSequence.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/nucleotideSequenceRemarks

Occurrence

Identifier: http://rs.tdwg.org/dwc-dp/1.0/occurrence

Description: A dwc:Event that establishes the state of a dwc:Organism at a particular place and time.

Examples:

`a wolf pack on the shore of Kluane Lake in 1988`

`a virus in a plant leaf in the New York Botanical Garden at 15:29 on 2014-10-23`

`a fungus in Central Park in the summer of 1929`

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/Occurrence

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
occurrence_pk				primary key	Yes	Yes
occurrenceID				weak primary key	No	No
event_fk	has context	event	event_pk	foreign key	Yes	Yes
isPartOfOccurrence_fk	part of	occurrence	occurrence_pk	foreign key	Yes	No
occurrenceProtocol_fk	followed	protocol	protocol_pk	foreign key	Yes	No
surveyTarget_fk	satisfied	survey-target	surveyTarget_pk	foreign key	Yes	No
organism_fk	of an	organism	organism_pk	foreign key	Yes	No
organismID	of an	organism	organismID	weak foreign key	No	No
identifiedBy_fk	identified by	agent	agent_pk	foreign key	Yes	No
identifiedByID	identified by	agent	agentID	weak foreign key	No	No

occurrence_pk
Title (Label)	Occurrence (Primary Key)
Namespace	dwc
Table	Occurrence
Description	A unique identifier for a dwc:Occurrence.
Notes	The value in this field MAY be changed in aggregation to guarantee uniqueness.
Examples	`http://arctos.database.museum/guid/MSB:Mamm:233627` `000866d2-c177-4648-a200-ead4007051b9` `urn:catalog:UWBM:Bird:89776`
Type	string
Constraints	{"required": true, "unique": true}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/occurrenceID

occurrenceID
Title (Label)	Occurrence ID
Namespace	dwc
Table	Occurrence
Description	An identifier for a dwc:Occurrence.
Notes	The value in this field MUST be preserved in aggregation. Recommended best practice is to use a globally unique identifier.
Examples	`http://arctos.database.museum/guid/MSB:Mamm:233627` `000866d2-c177-4648-a200-ead4007051b9` `urn:catalog:UWBM:Bird:89776`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/occurrenceID

event_fk
Title (Label)	Event (Foreign Key)
Namespace	dwc
Table	Occurrence
Description	An identifier for a dwc:Event.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/eventID

isPartOfOccurrence_fk
Title (Label)	Is Part Of Occurrence (Foreign Key)
Namespace	dwc
Table	Occurrence
Description	An identifier for a dwc:Occurrence of which this dwc:Occurrence is a part.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/occurrenceID

occurrenceProtocol_fk
Title (Label)	Occurrence Protocol (Foreign Key)
Namespace	dwc
Table	Occurrence
Description	An identifier for a dwc:Protocol used for a dwc:Occurrence.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/protocolID

surveyTarget_fk
Title (Label)	Survey Target (Foreign Key)
Namespace	eco
Table	Occurrence
Description	An identifier for an eco:SurveyTarget.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/surveyTargetID

recordNumber
Title (Label)	Record Number
Namespace	dwc
Table	Occurrence
Description	An identifier given to the dwc:Occurrence at the time it was recorded. Often serves as a link between field notes and a dwc:MaterialEntity record, such as a specimen collector's number.
Notes	Often serves as a link between field notes and a dwc:MaterialEntity, such as a specimen collector's number.
Examples	`OPP 7101`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/recordNumber

organismQuantity
Title (Label)	Organism Quantity
Namespace	dwc
Table	Occurrence
Description	A number or enumeration value for the quantity of dwc:Organisms.
Notes	A dwc:organismQuantity must have a corresponding dwc:organismQuantityType.
Examples	`27` (organismQuantity) with `individuals` (organismQuantityType) `12.5` (organismQuantity) with `% biomass` (organismQuantityType) `r` (organismQuantity) with `Braun-Blanquet Scale` (organismQuantityType) `many` (organismQuantity) with `individuals` (organismQuantityType)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismQuantity

organismQuantityType
Title (Label)	Organism Quantity Type
Namespace	dwc
Table	Occurrence
Description	The type of quantification system used for the quantity of dwc:Organisms.
Notes	A dwc:organismQuantityType must have a corresponding dwc:organismQuantity. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`27` (organismQuantity) with `individuals` (organismQuantityType) `12.5` (organismQuantity) with `% biomass` (organismQuantityType) `r` (organismQuantity) with `Braun-Blanquet Scale` (organismQuantityType) `many` (organismQuantity) with `individuals` (organismQuantityType)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismQuantityType

sex
Title (Label)	Sex
Namespace	dwc
Table	Occurrence
Description	A sex of a dwc:Organism.
Notes	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`female` `male` `hermaphrodite`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/sex

lifeStage
Title (Label)	Life Stage
Namespace	dwc
Table	Occurrence
Description	An age class or life stage of a dwc:Organism.
Notes	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`zygote` `larva` `juvenile` `adult` `seedling` `flowering` `fruiting`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/lifeStage

reproductiveCondition
Title (Label)	Reproductive Condition
Namespace	dwc
Table	Occurrence
Description	A reproductive condition of a dwc:Organism.
Notes	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`non-reproductive` `pregnant` `in bloom` `fruit-bearing`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/reproductiveCondition

caste
Title (Label)	Caste
Namespace	dwc
Table	Occurrence
Description	A social caste of a dwc:Organism.
Notes	Recommended best practice is to use a controlled vocabulary that aligns best with a dwc:Taxon. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`queen` `male alate` `intercaste` `minor worker` `soldier` `ergatoid`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/caste

behavior
Title (Label)	Behavior
Namespace	dwc
Table	Occurrence
Description	A behavior shown by a dwc:Organism.
Notes	This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`roosting` `foraging` `running`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/behavior

vitality
Title (Label)	Vitality
Namespace	dwc
Table	Occurrence
Description	An indication of whether a dwc:Organism was alive or dead at the time of collection or observation.
Notes	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`alive` `dead` `mixedLot` `uncertain` `notAssessed`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/vitality

establishmentMeans
Title (Label)	Establishment Means
Namespace	dwc
Table	Occurrence
Description	Statement about whether a dwc:Organism has been introduced to a given place and time through the direct or indirect activity of modern humans.
Notes	Recommended best practice is to use controlled value strings from the controlled vocabulary designated for use with this term, listed at http://rs.tdwg.org/dwc/doc/em/. For details, refer to https://doi.org/10.3897/biss.3.38084. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`native` `nativeReintroduced` `introduced` `introducedAssistedColonisation` `vagrant` `uncertain`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/establishmentMeans

degreeOfEstablishment
Title (Label)	Degree Of Establishment
Namespace	dwc
Table	Occurrence
Description	The degree to which a dwc:Organism survives, reproduces, and expands its range at the given place and time.
Notes	Recommended best practice is to use controlled value strings from the controlled vocabulary designated for use with this term, listed at http://rs.tdwg.org/dwc/doc/doe/. For details, refer to https://doi.org/10.3897/biss.3.38084. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`native` `captive` `cultivated` `released` `failing` `casual` `reproducing` `established` `colonising` `invasive` `widespreadInvasive`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/degreeOfEstablishment

pathway
Title (Label)	Pathway
Namespace	dwc
Table	Occurrence
Description	The process by which a dwc:Organism came to be in a given place at a given time.
Notes	Recommended best practice is to use controlled value strings from the controlled vocabulary designated for use with this term, listed at http://rs.tdwg.org/dwc/doc/pw/. For details, refer to https://doi.org/10.3897/biss.3.38084. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`releasedForUse` `otherEscape` `transportContaminant` `transportStowaway` `corridor` `unaided`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/pathway

substrate
Title (Label)	Substrate
Namespace	dwc
Table	Occurrence
Description	A type of biotic or abiotic material to which a dwc:Organism was attached during a dwc:Occurrence.
Notes	No inference can be made from this term that a dwc:Organism interacted in any other way than being connected to some (not a particular) material resource of the substrate type (such as during parasitization or decomposition). A host-parasite relationship is better expressed as a dwc:OrganismInteraction. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`stone` `wall` `decaying wood` `wooden board fence` `animal bones`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/substrate

occurrenceStatus
Title (Label)	Occurrence Status
Namespace	dwc
Table	Occurrence
Description	A statement about the detection or non-detection of a dwc:Organism during a dwc:Event.
Notes	For dwc:Occurrences, the default vocabulary is recommended to consist of 'detected' and 'notDetected', but can be extended by implementers with good justification. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`detected` `notDetected`
Type	string
Constraints	{"required": true}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/occurrenceStatus

occurrenceReferences
Title (Label)	Occurrence References
Namespace	dwc
Table	Occurrence
Description	A list (concatenated and separated) of identifiers (publication, bibliographic reference, global unique identifier, URI) of literature associated with the dwc:Occurrence.
Notes	Recommended best practice is to separate the values in a list with space vertical bar space ( \| ). Note that the intended usage of the term dcterms:references in Darwin Core is to point to the definitive source representation of the resource, if one is available. Note also that the intended usage of dcterms:bibliographicCitation in Darwin Core is to provide the preferred way to cite the resource itself.
Examples	`http://www.sciencemag.org/cgi/content/abstract/322/5899/261` `Christopher J. Conroy, Jennifer L. Neuwald. 2008. Phylogeographic study of the California vole, Microtus californicus Journal of Mammalogy, 89(3):755-767.` `Steven R. Hoofer and Ronald A. Van Den Bussche. 2001. Phylogenetic Relationships of Plecotine Bats and Allies Based on Mitochondrial Ribosomal Sequences. Journal of Mammalogy 82(1):131-137. \| Walker, Faith M., Jeffrey T. Foster, Kevin P. Drees, Carol L. Chambers. 2014. Spotted bat (Euderma maculatum) microsatellite discovery using illumina sequencing. Conservation Genetics Resources.` `https://doi.org/10.3897/BDJ.14.e177525`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/associatedReferences

occurrenceRemarks
Title (Label)	Occurrence Remarks
Namespace	dwc
Table	Occurrence
Description	Comments or notes about the dwc:Occurrence.
Examples	`found dead on road`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/occurrenceRemarks

organism_fk
Title (Label)	Organism (Foreign Key)
Namespace	dwc
Table	Occurrence
Description	An identifier for a dwc:Organism.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismID

organismID
Title (Label)	Organism ID
Namespace	dwc
Table	Occurrence
Description	An identifier for a dwc:Organism.
Notes	The value in this field MAY refer to a dwc:Organism within or external to the dataset in which this record originated.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismID

organismScope
Title (Label)	Organism Scope
Namespace	dwc
Table	Occurrence
Description	A description of the kind of dwc:Organism instance. Can be used to indicate whether the dwc:Organism instance represents a discrete organism or if it represents a particular type of aggregation.
Notes	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`multicellular organism` `virus` `clone` `pack` `colony`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismScope

organismName
Title (Label)	Organism Name
Namespace	dwc
Table	Occurrence
Description	A textual name or label assigned to a dwc:Organism instance.
Examples	`Huberta` `Boab Prison Tree` `J pod`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismName

causeOfDeath
Title (Label)	Cause Of Death
Namespace	dwc
Table	Occurrence
Description	An indication of the known or suspected cause of death of a dwc:Organism.
Notes	The cause may be due to natural causes (e.g., disease, predation), human-related activities (e.g., roadkill, pollution), or other environmental factors (e.g., extreme weather events).
Examples	`trapped` `poisoned` `starved` `drowned` `shot` `old age` `roadkill` `disease` `herbicide` `burned` `infanticide`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/causeOfDeath

organismRemarks
Title (Label)	Organism Remarks
Namespace	dwc
Table	Occurrence
Description	Comments or notes about the dwc:Organism instance.
Notes	`One of a litter of six`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismRemarks

verbatimIdentification
Title (Label)	Verbatim Identification
Namespace	dwc
Table	Occurrence
Description	A string representing the classification as it appeared in the original record.
Notes	This term is meant to allow the capture of an unaltered original identification/determination, including identification qualifiers, hybrid formulas, uncertainties, etc. This term is meant to be used in addition to dwc:geologicalMaterialNames or dwc:scientificName (and dwc:identificationQualifier etc.), not instead of it.
Examples	`Peromyscus sp.` `Ministrymon sp. nov. 1` `Anser anser × Branta canadensis` `Pachyporidae?`, `Potentilla × pantotricha Soják` `Aconitum pilipes × A. variegatum `Lepomis auritus x cyanellus`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/verbatimIdentification

identifiedBy
Title (Label)	Identified By
Namespace	dwc
Table	Occurrence
Description	A name for a dcterms:Agent responsible for making a dwc:Identification.
Notes	When used in the context of a Survey, the subject consists of all of the dwc:Identifications related to the Event. Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Examples	`James L. Patton` `Theodore Pappenfuss \| Robert Macey`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identifiedBy

identifiedBy_fk
Title (Label)	Identified By (Foreign Key)
Namespace	dwc
Table	Occurrence
Description	An identifier for a dcterms:Agent responsible for making a dwc:Identification.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identifiedByID

identifiedByID
Title (Label)	Identified By ID
Namespace	dwc
Table	Occurrence
Description	An identifier for a dcterms:Agent responsible for making a dwc:Identification.
Notes	The value in this field MAY refer to a dcterms:Agent within or external to the dataset in which this record originated.
Examples	`https://orcid.org/0000-0002-1825-0097` (for an individual) `https://orcid.org/0000-0002-1825-0097 \| https://orcid.org/0000-0002-1825-0098` (for a list of people)
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identifiedByID

dateIdentified
Title (Label)	Date Identified
Namespace	dwc
Table	Occurrence
Description	The date on which the subject was determined as representing the dwc:Taxon.
Notes	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/dateIdentified

identificationReferences
Title (Label)	Identification References
Namespace	dwc
Table	Occurrence
Description	A list (concatenated and separated) of dcterms:BibliographicResources used in a dwc:Identification.
Notes	When used in the context of a Survey, the subject consists of all of the dwc:Identifications related to the Survey. Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Examples	`Aves del Noroeste Patagonico. Christie et al. 2004.` `Stebbins, R. Field Guide to Western Reptiles and Amphibians. 3rd Edition. 2003. \| Irschick, D.J. and Shaffer, H.B. (1997). The polytypic species revisited: Morphological differentiation among tiger salamanders (Ambystoma tigrinum) (Amphibia: Caudata). Herpetologica, 53(1), 30-49.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identificationReferences

identificationVerificationStatus
Title (Label)	Identification Verification Status
Namespace	dwc
Table	Occurrence
Description	A categorical indicator of the extent to which a taxonomic determination has been verified to be correct.
Notes	Recommended best practice is to use a controlled vocabulary such as that used in HISPID and ABCD.
Examples	`0` (unverified in HISPID/ABCD).
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identificationVerificationStatus

identificationRemarks
Title (Label)	Identification Remarks
Namespace	dwc
Table	Occurrence
Description	Comments or notes about the dwc:Identification.
Examples	`Distinguished between Anthus correndera and Anthus hellmayri based on the comparative lengths of the uñas.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identificationRemarks

taxonID
Title (Label)	Taxon ID
Namespace	dwc
Table	Occurrence
Description	An identifier for a dwc:Taxon.
Notes	In DwC-DP, the taxonID is always an external link to a taxon record. As such, if present, it should be a resolvable globally unique identifier. See the Identifiers section of https://github.com/CatalogueOfLife/coldp/blob/master/README.md.
Examples	`8fa58e08-08de-4ac1-b69c-1235340b7001` `32567` `https://www.gbif.org/species/212`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/taxonID

scientificNameID
Title (Label)	Scientific Name ID
Namespace	dwc
Table	Occurrence
Description	An identifier for the nomenclatural (not taxonomic) details of a scientific name.
Notes	In DwC-DP, the taxonID is always an external link to a taxon record. As such, if present, it should be a resolvable globally unique identifier. See the Identifiers section of https://github.com/CatalogueOfLife/coldp/blob/master/README.md.
Examples	`urn:lsid:ipni.org:names:37829-1:1.3`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/scientificNameID

scientificName
Title (Label)	Scientific Name
Namespace	dwc
Table	Occurrence
Description	A scientific name string, not including authorship, date or identification qualifiers.
Examples	`Coleoptera` (order) `Vespertilionidae` (family) `Manis` (genus) `Ctenomys sociabilis` (genus + specificEpithet) `Ambystoma tigrinum diaboli` (genus + specificEpithet + infraspecificEpithet) `Quercus agrifolia var. oxyadenia` (genus + specificEpithet + taxonRank + infraspecificEpithet) `×Agropogon littoralis` `Mentha ×smithiana` `Agrostis stolonifera L. × Polypogon monspeliensis`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/scientificName

scientificNameAuthorship
Title (Label)	Scientific Name Authorship
Namespace	dwc
Table	Occurrence
Description	The authorship information for a dwc:scientificName formatted according to the conventions of the applicable dwc:nomenclaturalCode.
Examples	`(Torr.) J.T. Howell` `(Martinovský) Tzvelev` `(Györfi, 1952)`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/scientificNameAuthorship

vernacularName
Title (Label)	Vernacular Name
Namespace	dwc
Table	Occurrence
Description	A common or vernacular name.
Examples	`Andean Condor` `death cap` `rainbow trout` `Smoky Quartz` `Amethyst` `Agate` `Tiger's Eye`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/vernacularName

taxonRank
Title (Label)	Taxon Rank
Namespace	dwc
Table	Occurrence
Description	A taxonomic rank of the most specific name in a dwc:scientificName.
Notes	Recommended best practice is to use a controlled vocabulary. The taxon ranks of algae, fungi and plants are defined in the International Code of Nomenclature for algae, fungi, and plants (Shenzhen Code Articles H3.2, H4.4 and H.3.1).
Examples	`subspecies` `varietas` `forma` `species` `genus` `nothogenus` `nothospecies` `nothosubspecies`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/taxonRank

classificationSystem
Title (Label)	Classification System
Namespace	dc
Table	Occurrence
Description	A reference to the classification system in which an authoritative name or formal classification belongs.
Notes	Recommended best practice is to provide a formal citation or IRI. This term should not be confused with dwc:namePublishedIn as a classification system is not equivalent to a publication in which a taxon is first described. This term should not be confused with dwc:nameAccordingTo as a classification system is not equivalent to a publication or other source in which a specific taxon concept circumscription is defined or implied. This term should not be confused with dwc:nomenclaturalCode as a classification system is not equivalent to code of nomenclature, which states the rules for naming rather than an organized source of names. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`Strunz, H., Nickel, E.H. (2001): Strunz Mineralogical Tables. Chemical-Structural Mineral Classification System. 9th edition. E. Schweizerbart’sche Verlagsbuchhandlung, Stuttgart, ix + 870 p. (ISBN 3-510-65188-X)` `Gaines, R.V., Skinner, H.C.W., Foord, E.E., Mason, B., Rosenzweig, A. (1997): Dana's New Mineralogy: The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana. 8th edition. John Wiley & Sons, New York, xlv + 1819 p. (ISBN 0-471-19310-0).` `https://kos.geospecimens.org/vocab/meteorite-classification` `Mammal Diversity Database. (2026). Mammal Diversity Database (Version 2.5) [Data set]. [Zenodo](https://zenodo.org/records/10595931). https://doi.org/10.5281/zenodo.17033774` `Index Fungorum. (2026). Index Fungorum electronic database. Royal Botanic Gardens, Kew. Retrieved August 17, 2026, from indexfungorum.org.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/classificationSystem

informationWithheld
Title (Label)	Information Withheld
Namespace	dwc
Table	Occurrence
Description	Additional information that exists about a resource, but that is not shared publicly. Suggests that alternative data of higher quality may be available on request.
Examples	`location information not given for endangered species` `collector identities withheld \| ask about tissue samples`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/informationWithheld

dataGeneralizations
Title (Label)	Data Generalizations
Namespace	dwc
Table	Occurrence
Description	Actions taken to make the shared data less specific or complete than in its original form. Suggests that alternative data of higher quality may be available on request.
Examples	`Coordinates generalized from original GPS coordinates to the nearest half degree grid cell.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/dataGeneralizations

feedbackURL
Title (Label)	Feedback URL
Namespace	dwc
Table	Occurrence
Description	A uniform resource locator (URL) that points to a webpage on which a form may be submitted to gather feedback about the record.
Notes	Recommended best practice is to optionally include query strings that act to pre-populate web page form elements and communicate the context.
Examples	`https://example.com/new?title=New+issue&body=This+comment+is+about+CAN12345`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/feedbackURL

Occurrence Agent Role

Identifier: http://rs.tdwg.org/dwc-dp/1.0/occurrence-agent-role

Description: A role filled by a dcterms:Agent with respect to a dwc:Occurrence.

dcterms:isVersionOf: http://example.com/term-pending//occurrence-agent-role

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
occurrence_fk	role for	occurrence	occurrence_pk	foreign key	Yes	Yes
agent_fk	role holder	agent	agent_pk	foreign key	Yes	Yes

occurrence_fk
Title (Label)	Occurrence (Foreign Key)
Namespace	dwc
Table	Occurrence Agent Role
Description	An identifier for a dwc:Occurrence.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/occurrenceID

agent_fk
Title (Label)	Agent (Foreign Key)
Namespace	dwc
Table	Occurrence Agent Role
Description	An identifier for a dcterms:Agent.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

agentRole
Title (Label)	Agent Role
Namespace	dwc
Table	Occurrence Agent Role
Description	A category that best matches the nature of a role of a dcterms:Agent.
Notes	Recommended best practice is to use a controlled vocabulary for the roles appropriate to the class of resource a dcterms:AgentRole is related to.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResource

agentRoleIRI
Title (Label)	Agent Role IRI
Namespace	dwciri
Table	Occurrence Agent Role
Description	An IRI of the controlled vocabulary value for a role of a dcterms:Agent.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResourceID

agentRoleSource
Title (Label)	Agent Role Source
Namespace	dc
Table	Occurrence Agent Role
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:agentRole is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

agentRoleOrder
Title (Label)	Agent Role Order
Namespace	dwc
Table	Occurrence Agent Role
Description	A numerical position of an AgentRole in a set of AgentRoles that have the same combination of agentRole, agentRoleIRI, agentRoleSource and related target identifier.
Notes	One could use dwc:agentRoleOrder to create an ordered list of collectors (dwc:agentRole = 'collector') for a dwc:MaterialEntity, for example. The first would have dwc:agentRoleOrder=1, the second would have dwc:agentRoleOrder=2.
Type	integer
Constraints	{"required": true, "minimum": 1}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentRoleOrder

agentRoleDate
Title (Label)	Agent Role Date
Namespace	dwc
Table	Occurrence Agent Role
Description	An interval during which a dcterms:AgentRole was in effect.
Notes	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionEffectiveDate

Occurrence Assertion

Identifier: http://rs.tdwg.org/dwc-dp/1.0/occurrence-assertion

Description: A dwc:Assertion made by a dcterms:Agent about a dwc:Occurrence.

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/MeasurementOrFact

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
assertionID				weak primary key	No	No
occurrence_fk	about	occurrence	occurrence_pk	foreign key	Yes	Yes
assertionBy_fk	asserted by	agent	agent_pk	foreign key	Yes	No
assertionByID	asserted by	agent	agentID	weak foreign key	No	No
assertionProtocol_fk	followed	protocol	protocol_pk	foreign key	Yes	No

assertionID
Title (Label)	Assertion ID
Namespace	dwc
Table	Occurrence Assertion
Description	An identifier for a dwc:Assertion.
Notes	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": true}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionID

occurrence_fk
Title (Label)	Occurrence (Foreign Key)
Namespace	dwc
Table	Occurrence Assertion
Description	An identifier for a dwc:Occurrence.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/occurrenceID

verbatimAssertionType
Title (Label)	Verbatim Assertion Type
Namespace	dwc
Table	Occurrence Assertion
Description	A string representing the type of dwc:Assertion as it appeared in the original record.
Notes	This term is meant to allow the capture of an unaltered original name for a dwc:assertionType. This term is meant to be used in addition to dwc:assertionType, not instead of it.
Examples	`water_temp` `Fish biomass` `sampling net mesh size`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/verbatimAssertionType

assertionType
Title (Label)	Assertion Type
Namespace	dwc
Table	Occurrence Assertion
Description	A category that best matches the nature of a dwc:Assertion.
Notes	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`tail length` `temperature` `trap line length` `survey area` `trap type`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionType

assertionTypeIRI
Title (Label)	Assertion Type IRI
Namespace	dwciri
Table	Occurrence Assertion
Description	An IRI of a controlled vocabulary value for a type of dwc:Assertion.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/iri/measurementType

assertionTypeSource
Title (Label)	Assertion Type Source
Namespace	dc
Table	Occurrence Assertion
Description	A reference to the controlled vocabulary in which the definition of a value in dwc:assertionType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionMadeDate
Title (Label)	Assertion Made Date
Namespace	dwc
Table	Occurrence Assertion
Description	A date on which a dwc:Assertion was created.
Notes	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionMadeDate

assertionEffectiveDate
Title (Label)	Assertion Effective Date
Namespace	dwc
Table	Occurrence Assertion
Description	A date-time or time interval during which an asserted state or measurement was deemed to be in effect.
Notes	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionEffectiveDate

assertionValue
Title (Label)	Assertion Value
Namespace	dwc
Table	Occurrence Assertion
Description	An asserted value.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionValue

assertionValueIRI
Title (Label)	Assertion Value IRI
Namespace	dwciri
Table	Occurrence Assertion
Description	An IRI of the controlled vocabulary value for a value of a dwc:Assertion.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/iri/measurementValue

assertionValueSource
Title (Label)	Assertion Value Source
Namespace	dc
Table	Occurrence Assertion
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:assertionValue is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionUnit
Title (Label)	Assertion Unit
Namespace	dwc
Table	Occurrence Assertion
Description	Unit associated with the value in dwc:assertionValue.
Notes	Recommended best practice is to use a controlled vocabulary such as the Ontology of Units of Measure http://www.wurvoc.org/vocabularies/om-1.8/ of SI units, derived units, or other non-SI units accepted for use within the SI. For units that are composed of multiple parts, use the patterns as given in "A Primer for Communicating Mathematics via Plain Text" (https://cse.sc.edu/~fenner/latex-ASCII.pdf) by Stephen Fenner (e.g., `g/cm^3` for grams per cubic centimeter). For other units, provide the value as a recognizable standard (e.g., '%') or written out in full and in the plural (e.g., `individuals`). It is fine to provide non-SI units in the original language of the dataset.
Examples	`m` `s` `g` `ml`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionUnit

assertionUnitIRI
Title (Label)	Assertion Unit IRI
Namespace	dwciri
Table	Occurrence Assertion
Description	An IRI of a controlled vocabulary value for the unit of a dwc:assertionValue.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/iri/assertionUnit

assertionUnitSource
Title (Label)	Assertion Unit Source
Namespace	dc
Table	Occurrence Assertion
Description	A reference to a controlled vocabulary in which the definition of the value in dwc:assertionUnit is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionError
Title (Label)	Assertion Error
Namespace	dwc
Table	Occurrence Assertion
Description	A description of the potential error associated with a dwc:assertionValue.
Examples	`0.01` `normal distribution with variation of 2 m`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionError

assertionBy
Title (Label)	Assertion By
Namespace	dwc
Table	Occurrence Assertion
Description	A list (concatenated and separated) of names of dcterms:Agents responsible for making a dwc:Assertion.
Notes	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionBy

assertionBy_fk
Title (Label)	Assertion By (Foreign Key)
Namespace	dwc
Table	Occurrence Assertion
Description	An identifier for a dcterms:Agent responsible for making a dwc:Assertion.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

assertionByID
Title (Label)	Assertion By ID
Namespace	dwc
Table	Occurrence Assertion
Description	An identifier for a dcterms:Agent responsible for making a dwc:Assertion.
Notes	The value in this field MAY refer to a dcterms:Agent within or external to the dataset in which this record originated.
Examples	`https://orcid.org/0000-0002-1825-0097`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

assertionProtocols
Title (Label)	Assertion Protocols
Namespace	dwc
Table	Occurrence Assertion
Description	Names of, references to, or descriptions of dwc:Protocols used in making a dwc:Assertion.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionProtocols

assertionProtocol_fk
Title (Label)	Assertion Protocol (Foreign Key)
Namespace	dwc
Table	Occurrence Assertion
Description	An identifier for a dwc:Protocol used to make a dwc:Assertion.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/protocolID

assertionReferences
Title (Label)	Assertion References
Namespace	dwc
Table	Occurrence Assertion
Description	A list (concatenated and separated) of dcterms:BibliographicResources associated with a dwc:Assertion.
Notes	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionReferences

assertionRemarks
Title (Label)	Assertion Remarks
Namespace	dwc
Table	Occurrence Assertion
Description	Comments or notes about a dwc:Assertion.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionRemarks

Occurrence Identifier

Identifier: http://rs.tdwg.org/dwc-dp/1.0/occurrence-identifier

Description: An adms:Identifier for a dwc:Occurrence.

Notes: An important point to note is that properties of the adms:Identifier class are properties of the Identifier, not the resource that it identifies or the agency that issued it.

dcterms:isVersionOf: http://www.w3.org/ns/adms#Identifier

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
occurrence_fk	for	occurrence	occurrence_pk	foreign key	Yes	Yes

occurrence_fk
Title (Label)	Occurrence (Foreign Key)
Namespace	dwc
Table	Occurrence Identifier
Description	An identifier for a dwc:Occurrence.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/occurrenceID

identifier
Title (Label)	Identifier
Namespace	skos
Table	Occurrence Identifier
Description	An unambiguous reference to a resource within a given context.
Notes	Recommended best practice is to identify a resource by means of a string conforming to a formal identification system.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://www.w3.org/2004/02/skos/core#notation

identifierType
Title (Label)	Identifier Type
Namespace	dc
Table	Occurrence Identifier
Description	A category or system that best matches the nature of an identifier (skos:notation).
Notes	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/type

identifierTypeIRI
Title (Label)	Identifier Type IRI
Namespace	dcterms
Table	Occurrence Identifier
Description	An IRI of a controlled vocabulary value for a type of identifier.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/type

identifierTypeSource
Title (Label)	Identifier Type Source
Namespace	dc
Table	Occurrence Identifier
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:identifierType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

identifierLanguage
Title (Label)	Identifier Language
Namespace	dc
Table	Occurrence Identifier
Description	A language in which an identifier is presented.
Notes	Recommended best practice is to use an ISO639-2 three-letter language code.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/language

Occurrence Media

Identifier: http://rs.tdwg.org/dwc-dp/1.0/occurrence-media

Description: A dwc:Occurrence as content in an ac:Media entity.

dcterms:isVersionOf: http://example.com/term-pending//occurrence-media

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
media_fk	this media instance	media	media_pk	foreign key	Yes	Yes
occurrence_fk	about	occurrence	occurrence_pk	foreign key	Yes	Yes

media_fk
Title (Label)	Media (Foreign Key)
Namespace	dcterms
Table	Occurrence Media
Description	An identifier for an ac:Media resource.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://purl.org/dc/terms/identifier

occurrence_fk
Title (Label)	Occurrence (Foreign Key)
Namespace	dwc
Table	Occurrence Media
Description	An identifier for a dwc:Occurrence.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/occurrenceID

subjectCategory
Title (Label)	Subject Category
Namespace	ac
Table	Occurrence Media
Description	A term to describe the content of a image or a region of interest within an image using a controlled value string.
Notes	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/CVtermLiteral

subjectCategoryIRI
Title (Label)	Subject Category IRI
Namespace	Iptc4xmpExt
Table	Occurrence Media
Description	An IRI of a controlled vocabulary value for the subject category of an ac:Media resource.
Notes	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://iptc.org/std/Iptc4xmpExt/2008-02-29/CVterm

subjectCategoryVocabulary
Title (Label)	Subject Category Source
Namespace	ac
Table	Occurrence Media
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:subjectCategory is given.
Notes	The Audiovisual Core recommended vocabularies do not need to be cited here. There is no required linkage between individual Subject Category terms and the vocabulary; the mechanism is intended to support discovery of the normative URI for a term, but not guarantee it.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectCategoryVocabulary

subjectPartLiteral
Title (Label)	Subject Part Literal
Namespace	ac
Table	Occurrence Media
Description	The portion or product of organism morphology, behaviour, environment, etc. that is either predominantly shown or particularly well exemplified by the ac:Media resource, denoted by a controlled value string.
Notes	Values SHOULD be selected from the Controlled Vocabulary for ac:subjectPart. It is best practice to use ac:subjectPart instead of ac:subjectPartLiteral whenever practical.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectPartLiteral

subjectPart
Title (Label)	Subject Part
Namespace	ac
Table	Occurrence Media
Description	The portion or product of organism morphology, behaviour, environment, etc. that is either predominantly shown or particularly well exemplified by the ac:Media resource, denoted by an IRI.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectPart

subjectOrientationLiteral
Title (Label)	Subject Orientation Literal
Namespace	ac
Table	Occurrence Media
Description	Specific orientation (= direction, view angle) of the subject represented in the ac:Media resource with respect to the acquisition device, denoted by a controlled value string.
Notes	Values SHOULD be selected from the Controlled Vocabulary for ac:subjectOrientation. It is best practice to use ac:subjectOrientation instead of ac:subjectOrientationLiteral whenever practical.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectOrientationLiteral

subjectOrientation
Title (Label)	Subject Orientation
Namespace	ac
Table	Occurrence Media
Description	Specific orientation (= direction, view angle) of the subject represented in the ac:Media resource with respect to the acquisition device.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectOrientation

physicalSetting
Title (Label)	Physical Setting
Namespace	ac
Table	Occurrence Media
Description	The setting of the content represented in an ac:Media resource, such as images, sounds, and movies if the provider deems them relevant.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/physicalSetting

Occurrence Protocol

Identifier: http://rs.tdwg.org/dwc-dp/1.0/occurrence-protocol

Description: A dwc:Protocol used for a dwc:Occurrence.

dcterms:isVersionOf: http://example.com/term-pending//occurrence-protocol

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
protocol_fk	followed	protocol	protocol_pk	foreign key	Yes	Yes
occurrence_fk	used during	occurrence	occurrence_pk	foreign key	Yes	Yes

protocol_fk
Title (Label)	Occurrence Protocol (Foreign Key)
Namespace	dwc
Table	Occurrence Protocol
Description	An identifier for a dwc:Protocol.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/protocolID

occurrence_fk
Title (Label)	Occurrence (Foreign Key)
Namespace	dwc
Table	Occurrence Protocol
Description	An identifier for a dwc:Occurrence.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/occurrenceID

Occurrence Reference

Identifier: http://rs.tdwg.org/dwc-dp/1.0/occurrence-reference

Description: A dcterms:BibliographicResource related to a dwc:Occurrence.

dcterms:isVersionOf: http://example.com/term-pending//occurrence-reference

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
reference_fk	mentioned in	bibliographic-resource	reference_pk	foreign key	Yes	No
occurrence_fk	mentioned	occurrence	occurrence_pk	foreign key	Yes	Yes

reference_fk
Title (Label)	Reference (Foreign Key)
Namespace	dwc
Table	Occurrence Reference
Description	An identifier for a dcterms:BibliographicResource.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/referenceID

occurrence_fk
Title (Label)	Occurrence (Foreign Key)
Namespace	dwc
Table	Occurrence Reference
Description	An identifier for a dwc:Occurrence.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/occurrenceID

relationshipType
Title (Label)	Relationship Type
Namespace	dwc
Table	Occurrence Reference
Description	A relationship of a subject resource to a dcterms:BibliographicResource.
Notes	Recommended best practice is to use a controlled vocabulary.
Examples	`cited in` `referenced`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResource

Organism

Identifier: http://rs.tdwg.org/dwc-dp/1.0/organism

Description: A particular organism or defined group of organisms considered to be taxonomically homogeneous.

Notes: Instances of the dwc:Organism class are intended to facilitate linking one or more dwc:Identification instances to one or more dwc:Occurrence instances. Therefore, things that are typically assigned scientific names (such as viruses, hybrids, and lichens) and aggregates whose dwc:Occurrences are typically recorded (such as packs, clones, and colonies) are included in the scope of this class.

Examples:

`a specific bird`

`a specific wolf pack`

`a specific instance of a bacterial culture`

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/Organism

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
organism_pk				primary key	Yes	Yes
organismID				weak primary key	No	No

organism_pk
Title (Label)	Organism (Primary Key)
Namespace	dwc
Table	Organism
Description	A unique identifier for a dwc:Organism.
Notes	The value in this field MAY be changed in aggregation to guarantee uniqueness.
Type	string
Constraints	{"required": true, "unique": true}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismID

organismID
Title (Label)	Organism ID
Namespace	dwc
Table	Organism
Description	An identifier for a dwc:Organism.
Notes	The value in this field MUST be preserved in aggregation. Recommended best practice is to use a globally unique identifier.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismID

organismScope
Title (Label)	Organism Scope
Namespace	dwc
Table	Organism
Description	A description of the kind of dwc:Organism instance. Can be used to indicate whether the dwc:Organism instance represents a discrete organism or if it represents a particular type of aggregation.
Notes	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`multicellular organism` `virus` `clone` `pack` `colony`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismScope

organismName
Title (Label)	Organism Name
Namespace	dwc
Table	Organism
Description	A textual name or label assigned to a dwc:Organism instance.
Examples	`Huberta` `Boab Prison Tree` `J pod`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismName

causeOfDeath
Title (Label)	Cause Of Death
Namespace	dwc
Table	Organism
Description	An indication of the known or suspected cause of death of a dwc:Organism.
Notes	The cause may be due to natural causes (e.g., disease, predation), human-related activities (e.g., roadkill, pollution), or other environmental factors (e.g., extreme weather events).
Examples	`trapped` `poisoned` `starved` `drowned` `shot` `old age` `roadkill` `disease` `herbicide` `burned` `infanticide`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/causeOfDeath

associatedOrganisms
Title (Label)	Associated Organisms
Namespace	dwc
Table	Organism
Description	A list (concatenated and separated) of identifiers of other dwc:Organisms and the associations of this dwc:Organism to each of them.
Notes	This term can be used to provide a list of associations to other dwc:Organisms. Note that the dwc:ResourceRelationship class is an alternative means of representing associations, and with more detail. Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Examples	`"sibling of":"http://arctos.database.museum/guid/DMNS:Mamm:14171"` `"parent of":"http://arctos.database.museum/guid/MSB:Mamm:196208" \| "parent of":"http://arctos.database.museum/guid/MSB:Mamm:196523" \| "sibling of":"http://arctos.database.museum/guid/MSB:Mamm:142638"`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/associatedOrganisms

organismRemarks
Title (Label)	Organism Remarks
Namespace	dwc
Table	Organism
Description	Comments or notes about the dwc:Organism instance.
Examples	`One of a litter of six`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismRemarks

Organism Assertion

Identifier: http://rs.tdwg.org/dwc-dp/1.0/organism-assertion

Description: A dwc:Assertion made by a dcterms:Agent about a dwc:Organism.

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/MeasurementOrFact

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
assertionID				weak primary key	No	No
organism_fk	about	organism	organism_pk	foreign key	Yes	Yes
assertionBy_fk	asserted by	agent	agent_pk	foreign key	Yes	No
assertionByID	asserted by	agent	agentID	weak foreign key	No	No
assertionProtocol_fk	followed	protocol	protocol_pk	foreign key	Yes	No

assertionID
Title (Label)	Assertion ID
Namespace	dwc
Table	Organism Assertion
Description	An identifier for a dwc:Assertion.
Notes	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": true}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionID

organism_fk
Title (Label)	Organism (Foreign Key)
Namespace	dwc
Table	Organism Assertion
Description	An identifier for a dwc:Organism.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismID

verbatimAssertionType
Title (Label)	Verbatim Assertion Type
Namespace	dwc
Table	Organism Assertion
Description	A string representing the type of dwc:Assertion as it appeared in the original record.
Notes	This term is meant to allow the capture of an unaltered original name for a dwc:assertionType. This term is meant to be used in addition to dwc:assertionType, not instead of it.
Examples	`water_temp` `Fish biomass` `sampling net mesh size`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/verbatimAssertionType

assertionType
Title (Label)	Assertion Type
Namespace	dwc
Table	Organism Assertion
Description	A category that best matches the nature of a dwc:Assertion.
Notes	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`tail length` `temperature` `trap line length` `survey area` `trap type`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionType

assertionTypeIRI
Title (Label)	Assertion Type IRI
Namespace	dwciri
Table	Organism Assertion
Description	An IRI of a controlled vocabulary value for a type of dwc:Assertion.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/iri/measurementType

assertionTypeSource
Title (Label)	Assertion Type Source
Namespace	dc
Table	Organism Assertion
Description	A reference to the controlled vocabulary in which the definition of a value in dwc:assertionType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionMadeDate
Title (Label)	Assertion Made Date
Namespace	dwc
Table	Organism Assertion
Description	A date on which a dwc:Assertion was created.
Notes	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionMadeDate

assertionEffectiveDate
Title (Label)	Assertion Effective Date
Namespace	dwc
Table	Organism Assertion
Description	A date-time or time interval during which an asserted state or measurement was deemed to be in effect.
Notes	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionEffectiveDate

assertionValue
Title (Label)	Assertion Value
Namespace	dwc
Table	Organism Assertion
Description	An asserted value.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionValue

assertionValueIRI
Title (Label)	Assertion Value IRI
Namespace	dwciri
Table	Organism Assertion
Description	An IRI of the controlled vocabulary value for a value of a dwc:Assertion.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/iri/measurementValue

assertionValueSource
Title (Label)	Assertion Value Source
Namespace	dc
Table	Organism Assertion
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:assertionValue is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionUnit
Title (Label)	Assertion Unit
Namespace	dwc
Table	Organism Assertion
Description	Unit associated with the value in dwc:assertionValue.
Notes	Recommended best practice is to use a controlled vocabulary such as the Ontology of Units of Measure http://www.wurvoc.org/vocabularies/om-1.8/ of SI units, derived units, or other non-SI units accepted for use within the SI. For units that are composed of multiple parts, use the patterns as given in "A Primer for Communicating Mathematics via Plain Text" (https://cse.sc.edu/~fenner/latex-ASCII.pdf) by Stephen Fenner (e.g., `g/cm^3` for grams per cubic centimeter). For other units, provide the value as a recognizable standard (e.g., '%') or written out in full and in the plural (e.g., `individuals`). It is fine to provide non-SI units in the original language of the dataset.
Examples	`m` `s` `g` `ml`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionUnit

assertionUnitIRI
Title (Label)	Assertion Unit IRI
Namespace	dwciri
Table	Organism Assertion
Description	An IRI of a controlled vocabulary value for the unit of a dwc:assertionValue.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/iri/assertionUnit

assertionUnitSource
Title (Label)	Assertion Unit Source
Namespace	dc
Table	Organism Assertion
Description	A reference to a controlled vocabulary in which the definition of the value in dwc:assertionUnit is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionError
Title (Label)	Assertion Error
Namespace	dwc
Table	Organism Assertion
Description	A description of the potential error associated with a dwc:assertionValue.
Examples	`0.01` `normal distribution with variation of 2 m`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionError

assertionBy
Title (Label)	Assertion By
Namespace	dwc
Table	Organism Assertion
Description	A list (concatenated and separated) of names of dcterms:Agents responsible for making a dwc:Assertion.
Notes	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionBy

assertionBy_fk
Title (Label)	Assertion By (Foreign Key)
Namespace	dwc
Table	Organism Assertion
Description	An identifier for a dcterms:Agent responsible for making a dwc:Assertion.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

assertionByID
Title (Label)	Assertion By ID
Namespace	dwc
Table	Organism Assertion
Description	An identifier for a dcterms:Agent responsible for making a dwc:Assertion.
Notes	The value in this field MAY refer to a dcterms:Agent within or external to the dataset in which this record originated.
Examples	`https://orcid.org/0000-0002-1825-0097`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

assertionProtocols
Title (Label)	Assertion Protocols
Namespace	dwc
Table	Organism Assertion
Description	Names of, references to, or descriptions of dwc:Protocols used in making a dwc:Assertion.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionProtocols

assertionProtocol_fk
Title (Label)	Assertion Protocol (Foreign Key)
Namespace	dwc
Table	Organism Assertion
Description	An identifier for a dwc:Protocol used to make a dwc:Assertion.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/protocolID

assertionReferences
Title (Label)	Assertion References
Namespace	dwc
Table	Organism Assertion
Description	A list (concatenated and separated) of dcterms:BibliographicResources associated with a dwc:Assertion.
Notes	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionReferences

assertionRemarks
Title (Label)	Assertion Remarks
Namespace	dwc
Table	Organism Assertion
Description	Comments or notes about a dwc:Assertion.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionRemarks

Organism Identifier

Identifier: http://rs.tdwg.org/dwc-dp/1.0/organism-identifier

Description: An adms:Identifier for a dwc:Organism.

Notes: An important point to note is that properties of the adms:Identifier class are properties of the Identifier, not the resource that it identifies or the agency that issued it.

dcterms:isVersionOf: http://www.w3.org/ns/adms#Identifier

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
organism_fk	for	organism	organism_pk	foreign key	Yes	Yes

organism_fk
Title (Label)	Organism (Foreign Key)
Namespace	dwc
Table	Organism Identifier
Description	An identifier for a dwc:Organism.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismID

identifier
Title (Label)	Identifier
Namespace	skos
Table	Organism Identifier
Description	An unambiguous reference to a resource within a given context.
Notes	Recommended best practice is to identify a resource by means of a string conforming to a formal identification system.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://www.w3.org/2004/02/skos/core#notation

identifierType
Title (Label)	Identifier Type
Namespace	dc
Table	Organism Identifier
Description	A category or system that best matches the nature of an identifier (skos:notation).
Notes	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/type

identifierTypeIRI
Title (Label)	Identifier Type IRI
Namespace	dcterms
Table	Organism Identifier
Description	An IRI of a controlled vocabulary value for a type of identifier.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/type

identifierTypeSource
Title (Label)	Identifier Type Source
Namespace	dc
Table	Organism Identifier
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:identifierType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

identifierLanguage
Title (Label)	Identifier Language
Namespace	dc
Table	Organism Identifier
Description	A language in which an identifier is presented.
Notes	Recommended best practice is to use an ISO639-2 three-letter language code.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/language

Organism Interaction

Identifier: http://rs.tdwg.org/dwc-dp/1.0/organism-interaction

Description: An interaction between two dwc:Organisms during a dwc:Event.

Notes: Supports only primary observed interactions, not habitual or derived taxon-level interactions. Pairwise interactions must be used to represent multi-organism interactions. When possible, typify the action rather than the state from which an action is inferred, with the actor as the subject dwc:Occurrence and the acted-upon as the related dwc:Occurrence. Only one direction of a two-way interaction is necessary, though both are permissible as distinct OrganismInteractions with distinct subject dwc:Occurrences.

Examples:

`a bee visiting a flower`

`a Mallophora ruficauda hunting an Apis mellifera in flight`

`a viral infection in a plant`

`a female spider mating with a male spider`

`a lion cub nursing from its mother`

`a mosquito sucking blood from a chimpanzee's arm`

`a slug eating a fungus growing on decomposing stump (2 interactions)`

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/OrganismInteraction

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
organismInteraction_pk				primary key	Yes	Yes
organismInteractionID				weak primary key	No	No
event_fk	has context	event	event_pk	foreign key	Yes	Yes
subjectOccurrence_fk	by	occurrence	occurrence_pk	foreign key	Yes	Yes
relatedOccurrence_fk	with	occurrence	occurrence_pk	foreign key	Yes	No
relatedOccurrenceID	with	occurrence	occurrenceID	weak foreign key	No	No

organismInteraction_pk
Title (Label)	Organism Interaction (Primary Key)
Namespace	dwc
Table	Organism Interaction
Description	A unique identifier for a dwc:OrganismInteraction.
Notes	The value in this field MAY be changed in aggregation to guarantee uniqueness.
Type	string
Constraints	{"required": true, "unique": true}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismInteractionID

organismInteractionID
Title (Label)	Organism Interaction ID
Namespace	dwc
Table	Organism Interaction
Description	An identifier for a dwc:OrganismInteraction.
Notes	The value in this field MUST be preserved in aggregation. Recommended best practice is to use a globally unique identifier.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismInteractionID

event_fk
Title (Label)	Event (Foreign Key)
Namespace	dwc
Table	Organism Interaction
Description	An identifier for a dwc:Event.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/eventID

organismInteractionDescription
Title (Label)	Organism Interaction Description
Namespace	dwc
Table	Organism Interaction
Description	A verbatim description of a dwc:OrganismInteraction.
Examples	`Mallophora ruficauda capturing an Apis mellifera worker in flight.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismInteractionDescription

subjectOccurrence_fk
Title (Label)	Subject Occurrence (Foreign Key)
Namespace	dwc
Table	Organism Interaction
Description	An identifier for a subject dwc:Occurrence in a dwc:OrganismInteraction.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/occurrenceID

subjectOrganismPart
Title (Label)	Subject Organism Part
Namespace	dwc
Table	Organism Interaction
Description	An anatomical part of a subject dwc:Organism involved in a dwc:OrganismInteraction.
Notes	Recommended best practice is to use a controlled vocabulary.
Examples	`leaf` `stomach` `stamen` `leg`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismPart

organismInteractionType
Title (Label)	Organism Interaction Type
Namespace	dwc
Table	Organism Interaction
Description	A category that best matches the nature of a dwc:OrganismInteraction.
Notes	Recommended best practice is to use a controlled vocabulary.
Examples	`visited flower of` `pollinated by` `parasitoid of` `mated with` `was attached to`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismInteractionType

relatedOccurrence_fk
Title (Label)	Related Occurrence (Foreign Key)
Namespace	dwc
Table	Organism Interaction
Description	An identifier for a related dwc:Occurrence in a dwc:OrganismInteraction.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/occurrenceID

relatedOccurrenceID
Title (Label)	Related Occurrence ID
Namespace	dwc
Table	Organism Interaction
Description	An identifier for a related dwc:Occurrence in a dwc:OrganismInteraction.
Notes	The value in this field MAY refer to a dwc:Occurrence within or external to the dataset in which this record originated.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/occurrenceID

externalRelatedOccurrenceID
Title (Label)	External Related Occurrence ID
Namespace	dwc
Table	Organism Interaction
Description	An identifier for a related dwc:Occurrence (the object) of a dwc:ResourceRelationship that is not within the same dataset.
Notes	Recommended best practice is to use a globally unique identifier.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/occurrenceID

externalRelatedOccurrenceSource
Title (Label)	External Related Occurrence Source
Namespace	dc
Table	Organism Interaction
Description	A reference to a source outside the dataset where the related dwc:Occurrence record can be found.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

relatedOrganismPart
Title (Label)	Related Organism Part
Namespace	dwc
Table	Organism Interaction
Description	An anatomical part of a object dwc:Organism involved in a dwc:OrganismInteraction.
Notes	Recommended best practice is to use a controlled vocabulary.
Examples	`leaf` `stomach` `stamen` `leg`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismPart

feedbackURL
Title (Label)	Feedback URL
Namespace	dwc
Table	Organism Interaction
Description	A uniform resource locator (URL) that points to a webpage on which a form may be submitted to gather feedback about the record.
Notes	Recommended best practice is to optionally include query strings that act to pre-populate web page form elements and communicate the context.
Examples	`https://example.com/new?title=New+issue&body=This+comment+is+about+CAN12345`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/feedbackURL

Organism Interaction Agent Role

Identifier: http://rs.tdwg.org/dwc-dp/1.0/organism-interaction-agent-role

Description: A role filled by a dcterms:Agent with respect to a dwc:OrganismInteraction.

dcterms:isVersionOf: http://example.com/term-pending//organism-interaction-agent-role

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
organismInteraction_fk	role for	organism-interaction	organismInteraction_pk	foreign key	Yes	Yes
agent_fk	role holder	agent	agent_pk	foreign key	Yes	Yes

organismInteraction_fk
Title (Label)	Organism Interaction (Foreign Key)
Namespace	dwc
Table	Organism Interaction Agent Role
Description	An identifier for a dwc:OrganismInteraction.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismInteractionID

agent_fk
Title (Label)	Agent (Foreign Key)
Namespace	dwc
Table	Organism Interaction Agent Role
Description	An identifier for a dcterms:Agent.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

agentRole
Title (Label)	Agent Role
Namespace	dwc
Table	Organism Interaction Agent Role
Description	A category that best matches the nature of a role of a dcterms:Agent.
Notes	Recommended best practice is to use a controlled vocabulary for the roles appropriate to the class of resource a dcterms:AgentRole is related to.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResource

agentRoleIRI
Title (Label)	Agent Role IRI
Namespace	dwciri
Table	Organism Interaction Agent Role
Description	An IRI of the controlled vocabulary value for a role of a dcterms:Agent.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResourceID

agentRoleSource
Title (Label)	Agent Role Source
Namespace	dc
Table	Organism Interaction Agent Role
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:agentRole is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

agentRoleOrder
Title (Label)	Agent Role Order
Namespace	dwc
Table	Organism Interaction Agent Role
Description	A numerical position of an AgentRole in a set of AgentRoles that have the same combination of agentRole, agentRoleIRI, agentRoleSource and related target identifier.
Notes	One could use dwc:agentRoleOrder to create an ordered list of collectors (dwc:agentRole = 'collector') for a dwc:MaterialEntity, for example. The first would have dwc:agentRoleOrder=1, the second would have dwc:agentRoleOrder=2.
Type	integer
Constraints	{"required": true, "minimum": 1}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentRoleOrder

agentRoleDate
Title (Label)	Agent Role Date
Namespace	dwc
Table	Organism Interaction Agent Role
Description	An interval during which a dcterms:AgentRole was in effect.
Notes	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionEffectiveDate

Organism Interaction Assertion

Identifier: http://rs.tdwg.org/dwc-dp/1.0/organism-interaction-assertion

Description: A dwc:Assertion made by a dcterms:Agent about a dwc:OrganismInteraction.

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/MeasurementOrFact

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
assertionID				weak primary key	No	No
organismInteraction_fk	about	organism-interaction	organismInteraction_pk	foreign key	Yes	Yes
assertionBy_fk	asserted by	agent	agent_pk	foreign key	Yes	No
assertionByID	asserted by	agent	agentID	weak foreign key	No	No
assertionProtocol_fk	followed	protocol	protocol_pk	foreign key	Yes	No

assertionID
Title (Label)	Assertion ID
Namespace	dwc
Table	Organism Interaction Assertion
Description	An identifier for a dwc:Assertion.
Notes	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": true}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionID

organismInteraction_fk
Title (Label)	Organism Interaction (Foreign Key)
Namespace	dwc
Table	Organism Interaction Assertion
Description	An identifier for a dwc:OrganismInteraction.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismInteractionID

verbatimAssertionType
Title (Label)	Verbatim Assertion Type
Namespace	dwc
Table	Organism Interaction Assertion
Description	A string representing the type of dwc:Assertion as it appeared in the original record.
Notes	This term is meant to allow the capture of an unaltered original name for a dwc:assertionType. This term is meant to be used in addition to dwc:assertionType, not instead of it.
Examples	`water_temp` `Fish biomass` `sampling net mesh size`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/verbatimAssertionType

assertionType
Title (Label)	Assertion Type
Namespace	dwc
Table	Organism Interaction Assertion
Description	A category that best matches the nature of a dwc:Assertion.
Notes	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`tail length` `temperature` `trap line length` `survey area` `trap type`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionType

assertionTypeIRI
Title (Label)	Assertion Type IRI
Namespace	dwciri
Table	Organism Interaction Assertion
Description	An IRI of a controlled vocabulary value for a type of dwc:Assertion.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/iri/measurementType

assertionTypeSource
Title (Label)	Assertion Type Source
Namespace	dc
Table	Organism Interaction Assertion
Description	A reference to the controlled vocabulary in which the definition of a value in dwc:assertionType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionMadeDate
Title (Label)	Assertion Made Date
Namespace	dwc
Table	Organism Interaction Assertion
Description	A date on which a dwc:Assertion was created.
Notes	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionMadeDate

assertionEffectiveDate
Title (Label)	Assertion Effective Date
Namespace	dwc
Table	Organism Interaction Assertion
Description	A date-time or time interval during which an asserted state or measurement was deemed to be in effect.
Notes	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionEffectiveDate

assertionValue
Title (Label)	Assertion Value
Namespace	dwc
Table	Organism Interaction Assertion
Description	An asserted value.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionValue

assertionValueIRI
Title (Label)	Assertion Value IRI
Namespace	dwciri
Table	Organism Interaction Assertion
Description	An IRI of the controlled vocabulary value for a value of a dwc:Assertion.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/iri/measurementValue

assertionValueSource
Title (Label)	Assertion Value Source
Namespace	dc
Table	Organism Interaction Assertion
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:assertionValue is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionUnit
Title (Label)	Assertion Unit
Namespace	dwc
Table	Organism Interaction Assertion
Description	Unit associated with the value in dwc:assertionValue.
Notes	Recommended best practice is to use a controlled vocabulary such as the Ontology of Units of Measure http://www.wurvoc.org/vocabularies/om-1.8/ of SI units, derived units, or other non-SI units accepted for use within the SI. For units that are composed of multiple parts, use the patterns as given in "A Primer for Communicating Mathematics via Plain Text" (https://cse.sc.edu/~fenner/latex-ASCII.pdf) by Stephen Fenner (e.g., `g/cm^3` for grams per cubic centimeter). For other units, provide the value as a recognizable standard (e.g., '%') or written out in full and in the plural (e.g., `individuals`). It is fine to provide non-SI units in the original language of the dataset.
Examples	`m` `s` `g` `ml`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionUnit

assertionUnitIRI
Title (Label)	Assertion Unit IRI
Namespace	dwciri
Table	Organism Interaction Assertion
Description	An IRI of a controlled vocabulary value for the unit of a dwc:assertionValue.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/iri/assertionUnit

assertionUnitSource
Title (Label)	Assertion Unit Source
Namespace	dc
Table	Organism Interaction Assertion
Description	A reference to a controlled vocabulary in which the definition of the value in dwc:assertionUnit is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionError
Title (Label)	Assertion Error
Namespace	dwc
Table	Organism Interaction Assertion
Description	A description of the potential error associated with a dwc:assertionValue.
Examples	`0.01` `normal distribution with variation of 2 m`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionError

assertionBy
Title (Label)	Assertion By
Namespace	dwc
Table	Organism Interaction Assertion
Description	A list (concatenated and separated) of names of dcterms:Agents responsible for making a dwc:Assertion.
Notes	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionBy

assertionBy_fk
Title (Label)	Assertion By (Foreign Key)
Namespace	dwc
Table	Organism Interaction Assertion
Description	An identifier for a dcterms:Agent responsible for making a dwc:Assertion.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

assertionByID
Title (Label)	Assertion By ID
Namespace	dwc
Table	Organism Interaction Assertion
Description	An identifier for a dcterms:Agent responsible for making a dwc:Assertion.
Notes	The value in this field MAY refer to a dcterms:Agent within or external to the dataset in which this record originated.
Examples	`https://orcid.org/0000-0002-1825-0097`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

assertionProtocols
Title (Label)	Assertion Protocols
Namespace	dwc
Table	Organism Interaction Assertion
Description	Names of, references to, or descriptions of dwc:Protocols used in making a dwc:Assertion.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionProtocols

assertionProtocol_fk
Title (Label)	Assertion Protocol (Foreign Key)
Namespace	dwc
Table	Organism Interaction Assertion
Description	An identifier for a dwc:Protocol used to make a dwc:Assertion.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/protocolID

assertionReferences
Title (Label)	Assertion References
Namespace	dwc
Table	Organism Interaction Assertion
Description	A list (concatenated and separated) of dcterms:BibliographicResources associated with a dwc:Assertion.
Notes	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionReferences

assertionRemarks
Title (Label)	Assertion Remarks
Namespace	dwc
Table	Organism Interaction Assertion
Description	Comments or notes about a dwc:Assertion.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionRemarks

Organism Interaction Media

Identifier: http://rs.tdwg.org/dwc-dp/1.0/organism-interaction-media

Description: A dwc:OrganismInteraction as content in an ac:Media entity.

dcterms:isVersionOf: http://example.com/term-pending//organism-interaction-media

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
media_fk	this media instance	media	media_pk	foreign key	Yes	Yes
organismInteraction_fk	about	organism-interaction	organismInteraction_pk	foreign key	Yes	Yes

media_fk
Title (Label)	Media (Foreign Key)
Namespace	dcterms
Table	Organism Interaction Media
Description	An identifier for an ac:Media resource.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://purl.org/dc/terms/identifier

organismInteraction_fk
Title (Label)	Organism Interaction (Foreign Key)
Namespace	dwc
Table	Organism Interaction Media
Description	An identifier for a dwc:OrganismInteraction.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismInteractionID

subjectCategory
Title (Label)	Subject Category
Namespace	ac
Table	Organism Interaction Media
Description	A term to describe the content of a image or a region of interest within an image using a controlled value string.
Notes	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/CVtermLiteral

subjectCategoryIRI
Title (Label)	Subject Category IRI
Namespace	Iptc4xmpExt
Table	Organism Interaction Media
Description	An IRI of a controlled vocabulary value for the subject category of an ac:Media resource.
Notes	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://iptc.org/std/Iptc4xmpExt/2008-02-29/CVterm

subjectCategoryVocabulary
Title (Label)	Subject Category Source
Namespace	ac
Table	Organism Interaction Media
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:subjectCategory is given.
Notes	The Audiovisual Core recommended vocabularies do not need to be cited here. There is no required linkage between individual Subject Category terms and the vocabulary; the mechanism is intended to support discovery of the normative URI for a term, but not guarantee it.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectCategoryVocabulary

subjectPartLiteral
Title (Label)	Subject Part Literal
Namespace	ac
Table	Organism Interaction Media
Description	The portion or product of organism morphology, behaviour, environment, etc. that is either predominantly shown or particularly well exemplified by the ac:Media resource, denoted by a controlled value string.
Notes	Values SHOULD be selected from the Controlled Vocabulary for ac:subjectPart. It is best practice to use ac:subjectPart instead of ac:subjectPartLiteral whenever practical.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectPartLiteral

subjectPart
Title (Label)	Subject Part
Namespace	ac
Table	Organism Interaction Media
Description	The portion or product of organism morphology, behaviour, environment, etc. that is either predominantly shown or particularly well exemplified by the ac:Media resource.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectPart

subjectOrientationLiteral
Title (Label)	Subject Orientation Literal
Namespace	ac
Table	Organism Interaction Media
Description	Specific orientation (= direction, view angle) of the subject represented in the ac:Media resource with respect to the acquisition device, denoted by a controlled value string.
Notes	Values SHOULD be selected from the Controlled Vocabulary for ac:subjectOrientation. It is best practice to use ac:subjectOrientation instead of ac:subjectOrientationLiteral whenever practical.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectOrientationLiteral

subjectOrientation
Title (Label)	Subject Orientation
Namespace	ac
Table	Organism Interaction Media
Description	Specific orientation (= direction, view angle) of the subject represented in the ac:Media resource with respect to the acquisition device.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectOrientation

physicalSetting
Title (Label)	Physical Setting
Namespace	ac
Table	Organism Interaction Media
Description	The setting of the content represented in an ac:Media resource, such as images, sounds, and movies if the provider deems them relevant.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/physicalSetting

Organism Interaction Reference

Identifier: http://rs.tdwg.org/dwc-dp/1.0/organism-interaction-reference

Description: A dcterms:BibliographicResource related to a dwc:OrganismInteraction.

dcterms:isVersionOf: http://example.com/term-pending//organism-interaction-reference

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
reference_fk	mentioned in	bibliographic-resource	reference_pk	foreign key	Yes	No
organismInteraction_fk	mentioned	organism-interaction	organismInteraction_pk	foreign key	Yes	Yes

reference_fk
Title (Label)	Reference (Foreign Key)
Namespace	dwc
Table	Organism Interaction Reference
Description	An identifier for a dcterms:BibliographicResource.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/referenceID

organismInteraction_fk
Title (Label)	Organism Interaction (Foreign Key)
Namespace	dwc
Table	Organism Interaction Reference
Description	An identifier for a dwc:OrganismInteraction.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismInteractionID

relationshipType
Title (Label)	Relationship Type
Namespace	dwc
Table	Organism Interaction Reference
Description	A relationship of a subject resource to a dcterms:BibliographicResource.
Notes	Recommended best practice is to use a controlled vocabulary.
Examples	`cited in` `referenced`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResource

Organism Reference

Identifier: http://rs.tdwg.org/dwc-dp/1.0/organism-reference

Description: A dcterms:BibliographicResource related to a dwc:Organism.

dcterms:isVersionOf: http://example.com/term-pending//organism-reference

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
organism_fk	mentioned	organism	organism_pk	foreign key	Yes	Yes
reference_fk	mentioned in	bibliographic-resource	reference_pk	foreign key	Yes	No

organism_fk
Title (Label)	Organism (Foreign Key)
Namespace	dwc
Table	Organism Reference
Description	An identifier for a dwc:Organism.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismID

reference_fk
Title (Label)	Reference (Foreign Key)
Namespace	dwc
Table	Organism Reference
Description	An identifier for a dcterms:BibliographicResource.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/referenceID

relationshipType
Title (Label)	Relationship Type
Namespace	dwc
Table	Organism Reference
Description	A relationship of a subject resource to a dcterms:BibliographicResource.
Notes	Recommended best practice is to use a controlled vocabulary.
Examples	`cited in` `referenced`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResource

Organism Relationship

Identifier: http://rs.tdwg.org/dwc-dp/1.0/organism-relationship

Description: A dwc:ResourceRelationship of one dwc:Organism to another dwc:Organism.

Notes: An OrganismRelationship must be a permanent relationship. Ephemeral relationships between dwc:Organisms should be recorded as dwc:OrganismInteractions.

Examples:

`an instance of a dwc:Organism is the mother of another instance of a dwc:Organism`

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/ResourceRelationship

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
organismRelationshipID				weak primary key	No	No
subjectOrganism_fk	of	organism	organism_pk	foreign key	Yes	Yes
relatedOrganism_fk	to	organism	organism_pk	foreign key	Yes	No
relatedOrganismID	to	organism	organismID	weak foreign key	No	No
relationshipAccordingTo_fk	according to	agent	agent_pk	foreign key	Yes	No
relationshipAccordingToID	according to	agent	agentID	weak foreign key	No	No

organismRelationshipID
Title (Label)	Organism Relationship ID
Namespace	dwc
Table	Organism Relationship
Description	An identifier for a dwc:ResourceRelationship.
Notes	The value in this field MUST be preserved in aggregation. Recommended best practice is to use a globally unique identifier.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/resourceRelationshipID

subjectOrganism_fk
Title (Label)	Subject Organism (Foreign Key)
Namespace	dwc
Table	Organism Relationship
Description	An identifier for the dwc:Organism that is the subject of a dwc:ResourceRelationship.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismID

relationshipType
Title (Label)	Relationship Type
Namespace	dwc
Table	Organism Relationship
Description	A relationship of a subject resource (identified by dwc:subjectOrganismID) to a related resource (identified by dwc:relatedOrganismID).
Notes	Recommended best practice is to use a controlled vocabulary.
Examples	`same as` `duplicate of` `mother of` `offspring of` `sibling of` `parasite of` `host of` `valid synonym of` `located within` `pollinator of members of taxon` `pollinated specific plant` `pollinated by members of taxon` `on slab with`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResource

relationshipTypeIRI
Title (Label)	Relationship Type IRI
Namespace	dwc
Table	Organism Relationship
Description	An IRI of a controlled vocabulary value for the type of a dwc:ResourceRelationship.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Examples	`http://purl.obolibrary.org/obo/RO_0002456` (for the relation pollinated by) `http://purl.obolibrary.org/obo/RO_0002455` (for the relation pollinates) `https://www.inaturalist.org/observation_fields/879` (for the relation eaten by)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResource

relationshipTypeSource
Title (Label)	Relationship Type Source
Namespace	dc
Table	Organism Relationship
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:relationshipType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

relatedOrganism_fk
Title (Label)	Related Organism (Foreign Key)
Namespace	dwc
Table	Organism Relationship
Description	An identifier for the related dwc:Organism (the object) of a dwc:ResourceRelationship.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismID

relatedOrganismID
Title (Label)	Related Organism ID
Namespace	dwc
Table	Organism Relationship
Description	An identifier for the related dwc:Organism (the object) of a dwc:ResourceRelationship.
Notes	The value in this field MAY refer to a dwc:Organism within or external to the dataset in which this record originated.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismID

externalRelatedOrganismID
Title (Label)	External Related Organism ID
Namespace	dwc
Table	Organism Relationship
Description	An identifier for the related dwc:Organism (the object) of a dwc:ResourceRelationship that is not within the same dataset.
Notes	Recommended best practice is to use a globally unique identifier.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismID

externalRelatedOrganismSource
Title (Label)	External Related Organism Source
Namespace	dc
Table	Organism Relationship
Description	A reference to a source outside the dataset where the related dwc:Organism record can be found.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

relationshipAccordingTo
Title (Label)	Relationship According To
Namespace	dwc
Table	Organism Relationship
Description	A name of a dcterms:Agent responsible for asserting a dwc:ResourceRelationship.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipAccordingTo

relationshipAccordingTo_fk
Title (Label)	Relationship According To (Foreign Key)
Namespace	dwc
Table	Organism Relationship
Description	An identifier for a dcterms:Agent responsible for asserting a dwc:ResourceRelationship.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

relationshipAccordingToID
Title (Label)	Relationship According To ID
Namespace	dwc
Table	Organism Relationship
Description	An identifier for a dcterms:Agent responsible for asserting a dwc:ResourceRelationship.
Notes	The value in this field MAY refer to a dcterms:Agent within or external to the dataset in which this record originated.
Examples	`https://orcid.org/0000-0002-1825-0097`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

relationshipEstablishedDate
Title (Label)	Relationship Established Date
Namespace	dwc
Table	Organism Relationship
Description	A date on which a dwc:ResourceRelationship was established.
Notes	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipEstablishedDate

relationshipRemarks
Title (Label)	Relationship Remarks
Namespace	dwc
Table	Organism Relationship
Description	Comments or notes about a dwc:ResourceRelationship.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipRemarks

Protocol

Identifier: http://rs.tdwg.org/dwc-dp/1.0/protocol

Description: A method used during an action.

Examples:

`a pitfall trap method for sampling ground-dwelling arthropods`

`a point-radius georeferencing method`

`a linear regression model to estimate body mass from skeletal measurements`

`a Bayesian phylogenetic inference method`

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/Protocol

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
protocol_pk				primary key	Yes	Yes
protocolID				weak primary key	No	No

protocol_pk
Title (Label)	Protocol (Primary Key)
Namespace	dwc
Table	Protocol
Description	A unique identifier for a dwc:Protocol.
Notes	The value in this field MAY be changed in aggregation to guarantee uniqueness.
Type	string
Constraints	{"required": true, "unique": true}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/protocolID

protocolID
Title (Label)	Protocol ID
Namespace	dwc
Table	Protocol
Description	An identifier for a dwc:Protocol.
Notes	The value in this field MUST be preserved in aggregation. Recommended best practice is to use a globally unique identifier.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/protocolID

protocolType
Title (Label)	Protocol Type
Namespace	dwc
Table	Protocol
Description	A category that best matches the nature of a dwc:Protocol.
Notes	Recommended best practice is to use a controlled vocabulary.
Examples	`measurement` `georeference` `chronometric age` `chronometric age conversion` `sampling effort`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/protocolType

protocolName
Title (Label)	Protocol Name
Namespace	dcterms
Table	Protocol
Description	A name of a dwc:Protocol.
Notes	`ad hoc observation`; `bottom trawl`; `point count`; `UV light trap`
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/title

protocolDescription
Title (Label)	Protocol Description
Namespace	dwc
Table	Protocol
Description	A detailed description of a dwc:Protocol.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/protocolDescription

protocolReferences
Title (Label)	Protocol References
Namespace	eco
Table	Protocol
Description	A list (concatenated and separated) of dcterms:BibliographicResources used in a dwc:Protocol.
Notes	Recommended best practice is to separate multiple values in a list with space vertical bar space (` \| `).
Examples	`Penguins from space: faecal stains reveal the location of emperor penguin colonies, https://doi.org/10.1111/j.1466-8238.2009.00467.x`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/protocolReferences

protocolRemarks
Title (Label)	Protocol Remarks
Namespace	dwc
Table	Protocol
Description	Comments or notes about a dwc:Protocol.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/protocolRemarks

Protocol Reference

Identifier: http://rs.tdwg.org/dwc-dp/1.0/protocol-reference

Description: A dcterms:BibliographicResource related to a dwc:Protocol.

dcterms:isVersionOf: http://example.com/term-pending//protocol-reference

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
reference_fk	mentioned in	bibliographic-resource	reference_pk	foreign key	Yes	No
protocol_fk	mentioned	protocol	protocol_pk	foreign key	Yes	Yes

reference_fk
Title (Label)	Reference (Foreign Key)
Namespace	dwc
Table	Protocol Reference
Description	An identifier for a dcterms:BibliographicResource.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/referenceID

protocol_fk
Title (Label)	Protocol (Foreign Key)
Namespace	dwc
Table	Protocol Reference
Description	An identifier for a dwc:Protocol.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/protocolID

relationshipType
Title (Label)	Relationship Type
Namespace	dwc
Table	Protocol Reference
Description	A relationship of a subject resource to a dcterms:BibliographicResource.
Notes	Recommended best practice is to use a controlled vocabulary.
Examples	`cited in` `referenced`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResource

Provenance

Identifier: http://rs.tdwg.org/dwc-dp/1.0/provenance

Description: Information about an entity’s origins.

Notes: This is a convenience class to group related properties.

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/Provenance

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
provenance_pk				primary key	Yes	Yes
provenanceID				weak primary key	No	No
fundingAttribution_fk	funded by	agent	agent_pk	foreign key	Yes	No
fundingAttributionID	funded by	agent	agentID	weak foreign key	No	No
creator_fk	created by	agent	agent_pk	foreign key	Yes	No
creatorID	created by	agent	agentID	weak foreign key	No	No
provider_fk	provided by	agent	agent_pk	foreign key	Yes	No
providerID	provided by	agent	agentID	weak foreign key	No	No
metadataCreator_fk	metadata created by	agent	agent_pk	foreign key	Yes	No
metadataCreatorID	metadata created by	agent	agentID	weak foreign key	No	No
metadataProvider_fk	metadata provided by	agent	agent_pk	foreign key	Yes	No
metadataProviderID	metadata provided by	agent	agentID	weak foreign key	No	No

provenance_pk
Title (Label)	Provenance (Primary Key)
Namespace	dcterms
Table	Provenance
Description	A unique identifier for a dwc:Provenance.
Notes	The value in this field MAY be changed in aggregation to guarantee uniqueness.
Type	string
Constraints	{"required": true, "unique": true}
dcterms:isVersionOf	http://purl.org/dc/terms/identifier

provenanceID
Title (Label)	Provenance ID
Namespace	dcterms
Table	Provenance
Description	An identifier for a dwc:Provenance.
Notes	The value in this field MUST be preserved in aggregation. Recommended best practice is to use a globally unique identifier.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/identifier

datasetName
Title (Label)	Dataset Name
Namespace	dwc
Table	Provenance
Description	A name of a source dataset.
Examples	`Grinnell Resurvey Mammals` `Lacey Ctenomys Recaptures`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/datasetName

datasetID
Title (Label)	Dataset ID
Namespace	dwc
Table	Provenance
Description	An identifier for a dataset from which data originated.
Notes	Recommended best practice is to use a globally unique identifier.
Examples	`b15d4952-7d20-46f1-8a3e-556a512b04c5`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/datasetID

fundingAttribution
Title (Label)	Funding Attribution
Namespace	ac
Table	Provenance
Description	A list (concatenated and separated) of names of the funding organizations or agencies that provided funding for a project.
Notes	Specify the full official name of the funding body. This should include the complete name without abbreviations, unless the abbreviation is an official and commonly recognized form (e.g., NSF for the National Science Foundation). Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Examples	`Artsdatabanken` `National Science Foundation` `Norges forskningsråd` `Ocean Census \| Nippon Foundation`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/fundingAttribution

fundingAttribution_fk
Title (Label)	Funding Attribution (Foreign Key)
Namespace	dwc
Table	Provenance
Description	An identifier for a dcterms:Agent that financially supported a project.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/fundingAttributionID

fundingAttributionID
Title (Label)	Funding Attribution ID
Namespace	dwc
Table	Provenance
Description	An identifier for a dcterms:Agent that financially supported a project.
Notes	Provide a unique identifier for the funding body, such as an identifier used in governmental or international databases. If no official identifier exists, use a persistent and unique identifier within your organization or dataset. Recommended best practice is to separate the values in a list with space vertical bar space (` \| `). The value in this field MAY refer to a dcterms:Agent within or external to the dataset in which this record originated.
Examples	`https://ror.org/00epmv149` `https://ror.org/00epmv149 \| https://ror.org/04jnzhb65` `https://www.wikidata.org/wiki/Q13102615`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/fundingAttributionID

source
Title (Label)	Source
Namespace	dc
Table	Provenance
Description	A related resource from which this resource is derived.
Notes	The described resource may be derived from the related resource in whole or in part. Recommended best practice is to identify the related resource by means of a string conforming to a formal identification system.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

sourceIRI
Title (Label)	Source IRI
Namespace	dcterms
Table	Provenance
Description	An identifier for a resource from which this resource is derived.
Notes	This property is intended to be used with non-literal values. The described resource may be derived from the related resource in whole or in part. Best practice is to identify the related resource by means of a URI or a string conforming to a formal identification system.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/source

creator
Title (Label)	Creator
Namespace	dc
Table	Provenance
Description	A name of a dcterms:Agent primarily responsible for making the resource.
Notes	Human readable, or doi number, or URL. Simple name of parent for human readable.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/creator

creator_fk
Title (Label)	Creator (Foreign Key)
Namespace	dwc
Table	Provenance
Description	An identifier for a dcterms:Agent primarily responsible for making the resource.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

creatorID
Title (Label)	Creator ID
Namespace	dwc
Table	Provenance
Description	An identifier for a dcterms:Agent primarily responsible for making the resource.
Notes	The value in this field MAY refer to a dcterms:Agent within or external to the dataset in which this record originated.
Examples	`https://orcid.org/0000-0002-1825-0097`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

providerLiteral
Title (Label)	Provider
Namespace	ac
Table	Provenance
Description	A name of a dcterms:Agent responsible for presenting the ac:Media resource.
Notes	If no separate Metadata Provider is given, this also attributes the metadata.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/providerLiteral

provider_fk
Title (Label)	Provider (Foreign Key)
Namespace	dwc
Table	Provenance
Description	An identifier for a dcterms:Agent responsible for presenting the ac:Media resource.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

providerID
Title (Label)	Provider ID
Namespace	dwc
Table	Provenance
Description	An identifier for a dcterms:Agent responsible for presenting the ac:Media resource.
Notes	The value in this field MAY refer to a dcterms:Agent within or external to the dataset in which this record originated.
Examples	`https://orcid.org/0000-0002-1825-0097`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

metadataCreatorLiteral
Title (Label)	Metadata Creator
Namespace	ac
Table	Provenance
Description	A name of a dcterms:Agent that created the resource metadata.
Notes	See also the entry for ac:metadataCreator and the section Namespaces, Prefixes and Term Names in the Audiovisual Core Term List document for discussion of the rationale for separate terms taking URI values from those taking Literal values where both are possible. Normal practice is to use the same Label if both are provided. Labels have no effect on information discovery and are only suggestions.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/metadataCreatorLiteral

metadataCreator_fk
Title (Label)	Metadata Creator (Foreign Key)
Namespace	dwc
Table	Provenance
Description	An identifier for a dcterms:Agent that created the resource metadata.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

metadataCreatorID
Title (Label)	Metadata Creator ID
Namespace	dwc
Table	Provenance
Description	An identifier for a dcterms:Agent that created the resource metadata.
Notes	See also the entry for ac:metadataCreatorLiteral and the section Namespaces, Prefixes and Term Names in the Audiovisual Core Term List document for discussion of the rationale for separate terms taking URI values from those taking Literal values where both are possible. Normal practice is to use the same Label if both are provided. Labels have no effect on information discovery and are only suggestions. The value in this field MAY refer to a dcterms:Agent within or external to the dataset in which this record originated.
Examples	`https://orcid.org/0000-0002-1825-0097`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

metadataProviderLiteral
Title (Label)	Metadata Provider
Namespace	ac
Table	Provenance
Description	A name of a dcterms:Agent that provided the resource metadata.
Notes	Media resources and their metadata may be served from different institutions, e.g., in the case of aggregators adding user annotations, taxon identifications, or ratings. Compare Provider. See also the entry for ac:metadataProvider in this document and the section Namespaces, Prefixes and Term Names for discussion of the rationale for separate terms taking URI values from those taking Literal values where both are possible. Normal practice is to use the same Label if both are provided. Labels have no effect on information discovery and are only suggestions.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/metadataProviderLiteral

metadataProvider_fk
Title (Label)	Metadata Provider (Foreign Key)
Namespace	dwc
Table	Provenance
Description	An identifier for a dcterms:Agent that provided the resource metadata.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

metadataProviderID
Title (Label)	Metadata Provider ID
Namespace	dwc
Table	Provenance
Description	An identifier for a dcterms:Agent that provided the resource metadata.
Notes	Media resources and their metadata may be served from different institutions, e.g., in the case of aggregators adding user annotations, taxon identifications, or ratings. Compare Provider. See also the entry for ac:metadataProviderLiteral and the section Namespaces, Prefixes and Term Names in the Audiovisual Core Term List document for discussion of the rationale for separate terms taking URI values from those taking Literal values where both are possible. Normal practice is to use the same Label if both are provided. Labels have no effect on information discovery and are only suggestions. The value in this field MAY refer to a dcterms:Agent within or external to the dataset in which this record originated.
Examples	`https://orcid.org/0000-0002-1825-0097`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

furtherInformationURL
Title (Label)	Further Information URL
Namespace	ac
Table	Provenance
Description	A URL of a website that provides additional information about the version of the ac:Media resource that is provided by the Service Access Point.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/furtherInformationURL

references
Title (Label)	References
Namespace	dcterms
Table	Provenance
Description	A related resource that is referenced, cited, or otherwise pointed to by the described resource.
Notes	This property is intended to be used with non-literal values. This property is an inverse property of Is Referenced By.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/references

bibliographicCitation
Title (Label)	Bibliographic Citation
Namespace	dcterms
Table	Provenance
Description	A bibliographic reference for the resource.
Notes	From Dublin Core, 'Recommended practice is to include sufficient bibliographic detail to identify the resource as unambiguously as possible.' The intended usage of this term in Darwin Core is to provide the preferred way to cite the resource itself. Note that the intended usage of dcterms:references in Darwin Core, by contrast, is to point to the definitive source representation of the resource, if one is available.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/bibliographicCitation

projectTitle
Title (Label)	Project Title
Namespace	dwc
Table	Provenance
Description	A list (concatenated and separated) of titles or names for projects that contributed to a dwc:Event.
Notes	Use this term to provide the official name or title of a project as it is commonly known and cited. Avoid abbreviations unless they are widely understood. Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Examples	`Arctic Deep` `Scalidophora i Noreg` `The Nansen Legacy` `Underwater Oases of the Mar del Plata Canyon: Talud Continental IV`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/projectTitle

projectID
Title (Label)	Project ID
Namespace	dwc
Table	Provenance
Description	A list (concatenated and separated) of identifiers for projects that contributed to a dwc:Event.
Notes	A projectID may be shared in multiple distinct datasets. The nature of the association can be described in the metadata project description element. This term should be used to provide a globally unique identifier (GUID) for a project, if available. This could be a DOI, URI, or any other persistent identifier that ensures a project can be uniquely distinguished from others. Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Examples	`https://arvenetternansen.com/` `https://doi.org/10.26259/3b15eca7` `https://doi.org/10.3030/101180559` `OC202405` `RCN276730` `RCN276730 \| Artsproject_7-24`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/projectID

feedbackURL
Title (Label)	Feedback URL
Namespace	dwc
Table	Provenance
Description	A uniform resource locator (URL) that points to a webpage on which a form may be submitted to gather feedback about the record.
Notes	Recommended best practice is to optionally include query strings that act to pre-populate web page form elements and communicate the context.
Examples	`https://example.com/new?title=New+issue&body=This+comment+is+about+CAN12345`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/feedbackURL

Resource Relationship

Identifier: http://rs.tdwg.org/dwc-dp/1.0/resource-relationship

Description: A relationship of one rdfs:Resource (http://www.w3.org/2000/01/rdf-schema#Resource) to another.

Notes: Resources can be thought of as identifiable records or instances of classes and may include, but need not be limited to instances of dwc:Occurrence, dwc:Organism, dwc:MaterialEntity, dwc:Event, dcterms:Location, dwc:GeologicalContext, dwc:Identification, or dwc:Taxon.

Examples:

`an instance of a dwc:Organism is the mother of another instance of a dwc:Organism`

`a uniquely identified dwc:Occurrence represents the same dwc:Occurrence as another uniquely identified dwc:Occurrence`

`a dwc:MaterialEntity is a subsample of another dwc:MaterialEntity`

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/ResourceRelationship

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
resourceRelationshipID				weak primary key	No	No

resourceRelationshipID
Title (Label)	Resource Relationship ID
Namespace	dwc
Table	Resource Relationship
Description	An identifier for a dwc:ResourceRelationship.
Notes	The value in this field MUST be preserved in aggregation. Recommended best practice is to use a globally unique identifier.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/resourceRelationshipID

subjectResourceID
Title (Label)	Subject Resource ID
Namespace	dwc
Table	Resource Relationship
Description	An identifier for the resource that is the subject of a dwc:ResourceRelationship.
Notes	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/resourceID

subjectResourceType
Title (Label)	Subject Resource Type
Namespace	dc
Table	Resource Relationship
Description	A category that best matches the nature of a subject resource.
Notes	Recommended best practice is to use a controlled vocabulary consisting of the classes of resources that can be related to each other.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/type

subjectResourceTypeIRI
Title (Label)	Subject Resource Type IRI
Namespace	dcterms
Table	Resource Relationship
Description	An IRI of a controlled vocabulary value for the type of a subject resource.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/type

subjectResourceTypeSource
Title (Label)	Subject Resource Type Source
Namespace	dc
Table	Resource Relationship
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:subjectResourceType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

relationshipType
Title (Label)	Relationship Type
Namespace	dwc
Table	Resource Relationship
Description	A relationship of a subject resource (identified by dwc:subjectResourceID) to a related resource (identified by dwc:relatedResourceID).
Notes	Recommended best practice is to use a controlled vocabulary.
Examples	`same as` `duplicate of` `mother of` `offspring of` `sibling of` `parasite of` `host of` `valid synonym of` `located within` `pollinator of members of taxon` `pollinated specific plant` `pollinated by members of taxon` `on slab with`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResource

relationshipTypeIRI
Title (Label)	Relationship Type IRI
Namespace	dwc
Table	Resource Relationship
Description	An IRI of a controlled vocabulary value for the type of a dwc:ResourceRelationship.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Examples	`http://purl.obolibrary.org/obo/RO_0002456` (for the relation pollinated by) `http://purl.obolibrary.org/obo/RO_0002455` (for the relation pollinates) `https://www.inaturalist.org/observation_fields/879` (for the relation eaten by)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResourceID

relationshipTypeSource
Title (Label)	Relationship Type Source
Namespace	dc
Table	Resource Relationship
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:relationshipType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

relatedResourceID
Title (Label)	Related Resource ID
Namespace	dwc
Table	Resource Relationship
Description	An identifier for the related resource (the object) of a dwc:ResourceRelationship.
Notes	Recommended best practice is to use a globally unique identifier.
Examples	`dc609808-b09b-11e8-96f8-529269fb1459`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relatedResourceID

externalRelatedResourceID
Title (Label)	External Related Resource ID
Namespace	dcterms
Table	Resource Relationship
Description	An identifier for the related resource (the object) of a dwc:ResourceRelationship that is not within the same dataset.
Notes	Recommended best practice is to use a globally unique identifier.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/identifier

externalRelatedResourceSource
Title (Label)	External Related Resource Source
Namespace	dc
Table	Resource Relationship
Description	A reference to a source outside the dataset where the related resource can be found.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

relatedResourceType
Title (Label)	Related Resource Type
Namespace	dc
Table	Resource Relationship
Description	A category that best matches the nature of a related resource.
Notes	Recommended best practice is to use a controlled vocabulary consisting of the classes of resources that can be related to each other.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/type

relatedResourceTypeIRI
Title (Label)	Related Resource Type IRI
Namespace	dcterms
Table	Resource Relationship
Description	An IRI of a controlled vocabulary value for a type of related resource.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/type

relatedResourceTypeSource
Title (Label)	Related Resource Type Source
Namespace	dc
Table	Resource Relationship
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:relatedResourceType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

relationshipAccordingTo
Title (Label)	Relationship According To
Namespace	dwc
Table	Resource Relationship
Description	A name of a dcterms:Agent responsible for asserting a dwc:ResourceRelationship.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipAccordingTo

relationshipAccordingToID
Title (Label)	Relationship According To ID
Namespace	dwc
Table	Resource Relationship
Description	An identifier for a dcterms:Agent responsible for asserting a dwc:ResourceRelationship.
Notes	Recommended best practice is to use a globally unique identifier.
Examples	`https://orcid.org/0000-0002-1825-0097`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

relationshipEstablishedDate
Title (Label)	Relationship Established Date
Namespace	dwc
Table	Resource Relationship
Description	A date-time or time interval during which a dwc:ResourceRelationship was established.
Notes	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipEstablishedDate

relationshipRemarks
Title (Label)	Relationship Remarks
Namespace	dwc
Table	Resource Relationship
Description	Comments or notes about a dwc:ResourceRelationship.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipRemarks

Survey

Identifier: http://rs.tdwg.org/dwc-dp/1.0/survey

Description: A dwc:Event intentionally designed to characterize a defined biotic target or domain in such a way that the resulting dwc:Occurrences can be interpreted collectively to support ecological and monitoring inference (such as detectability, abundance, species co-occurence, spatial distribution, or temporal trends), rather than merely documenting individual observations or gathered material.

Notes: Many terms from the Humboldt Extension for Ecological Inventories (eco: namespace) are organized in this class, particularly those that help describe and document the sampling process.

Examples:

`a botanical survey of a protected area to assess native and invasive plant species`

`a wetland vegetation mapping`

`a camera trap deployment in a rainforest to monitor large mammals`

`a frog call survey in wetlands across breeding seasons`

`a coverboard survey for reptiles in forested environments`

`a pollinator survey in an agricultural landscape`

`a macroinvertebrate sampling in a freshwater stream to assess water quality`

`a habitat- or ecosystem-level survey (e.g., coral reef health assessment, forest biodiversity assessment)`

`an environmental impact assessment (e.g., pre-construction biological baseline survey for a wind farm project)`

dcterms:isVersionOf: http://rs.tdwg.org/eco/terms/Survey

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
survey_pk				primary key	Yes	Yes
surveyID				weak primary key	No	No
event_fk	has context	event	event_pk	foreign key	Yes	Yes
identifiedBy_fk	identified by	agent	agent_pk	foreign key	Yes	No
identifiedByID	identifications by	agent	agentID	weak foreign key	No	No
samplingProtocol_fk	followed	protocol	protocol_pk	foreign key	Yes	No
samplingPerformedBy_fk	sampling performed by	agent	agent_pk	foreign key	Yes	No
samplingPerformedByID	sampling performed by	agent	agentID	weak foreign key	No	No
samplingEffortProtocol_fk	followed	protocol	protocol_pk	foreign key	Yes	No

survey_pk
Title (Label)	Survey (Primary Key)
Namespace	dwc
Table	Survey
Description	A unique identifier for an eco:Survey.
Notes	The value in this field MAY be changed in aggregation to guarantee uniqueness.
Type	string
Constraints	{"required": true, "unique": true}
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/surveyID

surveyID
Title (Label)	Survey ID
Namespace	dwc
Table	Survey
Description	An identifier for an eco:Survey.
Notes	The value in this field MUST be preserved in aggregation. Recommended best practice is to use a globally unique identifier.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/surveyID

event_fk
Title (Label)	Event (Foreign Key)
Namespace	dwc
Table	Survey
Description	An identifier for a dwc:Event.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/eventID

surveySiteType
Title (Label)	Survey Site Type
Namespace	eco
Table	Survey
Description	A spatial category of a sampling location for an eco:Survey.
Notes	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the ecoiri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`horizontalTransect` `verticalTransect` `arealPlot` `observationPoint`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/siteSurveyType

siteCount
Title (Label)	Site Count
Namespace	eco
Table	Survey
Description	Total number of individual sites surveyed during an eco:Survey.
Notes	Site refers to the dcterms:Location at which observations are made or samples/measurements are taken. The site can be at any level of hierarchy.
Examples	`1` `15`
Type	integer
Constraints	{"minimum": 1}
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/siteCount

siteNestingDescription
Title (Label)	Site Nesting Description
Namespace	eco
Table	Survey
Description	Textual description of a hierarchical sampling design.
Notes	Site refers to the location at which observations are made or samples/measurements are taken. The site can be at any level of hierarchy.
Examples	`5 sampling sites of 3-5 plots each`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/siteNestingDescription

verbatimSiteDescriptions
Title (Label)	Verbatim Site Descriptions
Namespace	eco
Table	Survey
Description	Original textual description of the site(s).
Notes	Site refers to the dcterms:Location at which observations are made or samples/measurements are taken. The site can be at any level of hierarchy. Recommended best practice is to separate multiple values in a list with space vertical bar space ( \| ).
Examples	`Wet flatwoods \| Wet depression surrounded by mesic longleaf pine flatwoods \| Ground cover of thick Andropogon spp., Sporobolus floridanus, Vaccinium spp, Rhynchospora spp., Centella erecta, Panicum rigidulum.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/verbatimSiteDescriptions

verbatimSiteNames
Title (Label)	Verbatim Site Names
Namespace	eco
Table	Survey
Description	A list (concatenated and separated) of original site names.
Notes	Site refers to the dcterms:Location at which observations are made or samples/measurements are taken. The site can be at any level of hierarchy. Recommended best practice is to separate multiple values in a list with space vertical bar space ( \| ).
Examples	`East Coastal Fringe \| St. Marks Wildlife Management Area` `S1 \| S2 \| C1 \| C2 \| R14 \| R22 \| W1`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/verbatimSiteNames

geospatialScopeAreaValue
Title (Label)	Geospatial Scope Area Value
Namespace	eco
Table	Survey
Description	The numeric value for the total area of the geospatial scope of an eco:Survey.
Notes	Geospatial scope refers to the place described by a dcterms:Location. This area is always greater than or equal to the eco:totalAreaSampledValue because it reflects the targeted location for which an inventory is intended and informs the sampling design. An eco:geospatialScopeAreaValue must have a corresponding eco:geospatialScopeAreaUnit.
Examples	`25`
Type	number
Constraints	{"minimum": 0}
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/geospatialScopeAreaValue

geospatialScopeAreaUnit
Title (Label)	Geospatial Scope Area Unit
Namespace	eco
Table	Survey
Description	Units associated with a value in eco:geospatialScopeAreaValue.
Notes	Recommended best practice is to use a controlled vocabulary. For units containing exponents, use characters from the Unicode Latin-1 Supplement character set (hex 00B2 for squared and 00B3 for cubed). This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`km²`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/geospatialScopeAreaUnit

totalAreaSampledUnit
Title (Label)	Total Area Sampled Unit
Namespace	eco
Table	Survey
Description	Units associated with a value in eco:totalAreaSampledValue.
Notes	Recommended best practice is to use a controlled vocabulary. For units containing exponents, use characters from the Unicode Latin-1 Supplement character set (hex 00B2 for squared and 00B3 for cubed). This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`km²`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/totalAreaSampledUnit

totalAreaSampledValue
Title (Label)	Total Area Sampled Value
Namespace	eco
Table	Survey
Description	A numeric value for the total area, volume or distance surveyed during the eco:Survey.
Notes	This value is always less than or equal to the eco:geospatialScopeAreaValue because it reflects the portion of the geospatialScope that was actually sampled. An eco:totalAreaSampledValue must have a corresponding eco:totalAreaSampledUnit.
Examples	`0.8`
Type	number
Constraints	{"minimum": 0}
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/totalAreaSampledValue

taxonCompletenessReported
Title (Label)	Taxon Completeness Reported
Namespace	eco
Table	Survey
Description	Statement about whether the taxonomic completeness of an eco:Survey was assessed.
Notes	This term is meant to alert users that the inventory was conducted in such a way that all of the target taxa (the combination of eco:targetTaxonomicScope and eco:excludedTaxonomicScope) should have been detectable if they were present during an eco:Survey. This term can provide data users with a qualitative measure of how comprehensively an area has been surveyed, which assists in interpreting species populations, areas of occupancy, inferring species absences, etc. This term is only relevant if an eco:Survey used restricted search or open search methods. If taxonomic completeness was assessed, the methods used or an explanation of the basis of the completeness should be stated in eco:taxonCompletenessProtocols. Recommended best practice is to use controlled value strings from the controlled vocabulary designated for use with this term, listed at http://rs.tdwg.org/dwc/doc/tcr/. This term has an equivalent in the ecoiri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`notReported` `reportedComplete` `reportedIncomplete`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/taxonCompletenessReported

taxonCompletenessProtocols
Title (Label)	Taxon Completeness Protocols
Namespace	eco
Table	Survey
Description	A description of or reference to the dwc:Protocols used to determine eco:taxonCompletenessReported.
Notes	This term allows users to determine how comprehensively an area has been sampled. Recommended best practice is to separate multiple values in a list with space vertical bar space (` \| `). This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`census \| based on sampling effort` `based on species accumulation curves`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/taxonCompletenessProtocols

isAbsenceReported
Title (Label)	Is Absence Reported
Namespace	eco
Table	Survey
Description	Taxonomic absences were reported.
Notes	Absences can be reported at any taxonomic level. Recommended best practice is to follow the TDWG Boolean Controlled Vocabulary http://rs.tdwg.org/tag/doc/boolean/.
Examples	`true` `false`
Type	boolean
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/isAbsenceReported

absentTaxa
Title (Label)	Absent Taxa
Namespace	eco
Table	Survey
Description	A list (concatenated and separated) of taxa reported absent during an eco:Survey
Notes	Absences can be reported at any taxonomic level. This term refers to the list of taxa within an eco:targetTaxonomicScope that were not detected in an eco:Survey. Recommended best practice is to separate multiple values in a list with space vertical bar space ( \| ). This term has an equivalent in the ecoiri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`Parabuteo unicinctus \| Geranoaetus melanoleucus` `Cetoniinae \| Aclopinae \| Cyclocephala modesta`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/absentTaxa

hasNonTargetTaxa
Title (Label)	Has Non Target Taxa
Namespace	eco
Table	Survey
Description	One or more dwc:Occurrences of taxa outside the target taxonomic scope (the combination of eco:targetTaxonomicScope and eco:excludedTaxonomicScope) were detected and reported for an eco:Survey.
Notes	This term is meant to alert users to the presence of non-target taxa (in some disciplines called “bycatch”) reported in an eco:Survey. This term is relevant only if a target taxonomic scope is declared. Taxonomic scope is based on the combination of eco:targetTaxonomicScope and eco:excludedTaxonomicScope. Examination of the taxonomic scope is needed in order to identify the non-target taxa. It should be possible to confirm the expectations by investigating the dwc:Occurrences in an eco:Survey and in its child eco:Surveys (if available) or by exploring eco:nonTargetTaxa for an eco:Survey (if populated). The value of this term should be 'true' if dwc:Occurrences of taxa outside the taxonomic scope as defined at the time of an eco:Survey are reported, otherwise the value of this term should be 'false'. Recommended best practice is to follow the TDWG Boolean Controlled Vocabulary http://rs.tdwg.org/tag/doc/boolean/.
Examples	`true` `false`
Type	boolean
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/hasNonTargetTaxa

nonTargetTaxa
Title (Label)	Non Target Taxa
Namespace	eco
Table	Survey
Description	A list (concatenated and separated) of taxa reported during an eco:Survey that are outside of the target taxonomic scope (the combination of eco:targetTaxonomicScope and eco:excludedTaxonomicScope).
Notes	This term is meant to allow the full list of taxa that are considered outside of the taxonomic scope and yet were reported in an eco:Survey. This term is relevant only if a target taxonomic scope is declared and eco:hasNonTargetTaxa is ‘true’. Taxonomic scope is based on the combination of eco:targetTaxonomicScope and eco:excludedTaxonomicScope. Non-target taxa (in some disciplines called “bycatch”) can be reported at any taxonomic level. Recommended best practice is to separate multiple values in a list with space vertical bar space ( \| ). This term has an equivalent in the ecoiri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`Parabuteo unicinctus \| Geranoaetus melanoleucus` `Cetoniinae \| Aclopinae \| Cyclocephala modesta`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/nonTargetTaxa

areNonTargetTaxaFullyReported
Title (Label)	Are Non Target Taxa Fully Reported
Namespace	eco
Table	Survey
Description	Every dwc:Occurrence that was outside of the target taxonomic scope (the combination of eco:targetTaxonomicScope and eco:excludedTaxonomicScope) and detected during an eco:Survey, and that was detectable using the given protocol (given in eco:protocolDescriptions and dwc:samplingProtocol), was reported.
Notes	This term is meant to inform a user of the data whether there were non-target taxa that were detected, but left unreported. This term is only relevant if an eco:Survey used restricted search or open search methods and if a target taxonomic scope is declared. Taxonomic scope is based on the combination of eco:targetTaxonomicScope and eco:excludedTaxonomicScope. Within eco:Surveys that used either a restricted search or an open search method and declared a taxonomic scope, if all dwc:Occurrences that are not included within the target taxonomic scope and that were detected during an eco:Survey were reported, the value of this term should be 'true', otherwise the value of this term should be ‘false'. Recommended best practice is to follow the TDWG Boolean Controlled Vocabulary http://rs.tdwg.org/tag/doc/boolean/.
Examples	`true` `false`
Type	boolean
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/areNonTargetTaxaFullyReported

hasNonTargetOrganisms
Title (Label)	Has Non Target Organisms
Namespace	eco
Table	Survey
Description	One or more dwc:Occurrences outside the target organismal scopes (eco:targetDegreeOfEstablishmentScope, eco:targetGrowthFormScope, and eco:targetLifeStageScope) were detected and reported for an eco:Survey.
Notes	This term is meant to alert users to the presence of non-target organisms (in some disciplines called “bycatch”) reported in an eco:Survey. This term is relevant only if a target organismal scope is declared. Organismal scope is based on the combination of all of the following terms: eco:targetLifeStageScope, eco:excludedLifeStageScope, eco:targetDegreeOfEstablishmentScope, eco:excludedDegreeOfEstablishmentScope, eco:targetGrowthFormScope, and eco:excludedGrowthFormScope. Examination of the organismal scope is needed in order to identify the non-target dwc:Occurrences. It should be possible to confirm the expectations by investigating dwc:Occurrences in an eco:Survey and in its child eco:Surveys (if available). The value of this term should be 'true' if dwc:Occurrences outside the organismal scope(s) as defined at the time of an eco:Survey are reported, otherwise the value of this term should be 'false'. Recommended best practice is to follow the TDWG Boolean Controlled Vocabulary http://rs.tdwg.org/tag/doc/boolean/.
Examples	`true` `false`
Type	boolean
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/hasNonTargetOrganisms

verbatimTargetScope
Title (Label)	Verbatim Target Scope
Namespace	eco
Table	Survey
Description	The verbatim original description of an eco:Survey scope.
Notes	Recommended best practice is first to populate explicit scope terms to the fullest extent possible (e.g., eco:targetTaxonomicScope). It is not recommended to use this term in assessing absence or completeness.
Examples	`small mammals` `freshwater macroinvertebrates` `dead animals`, `ground-living insects`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/verbatimTargetScope

identifiedBy
Title (Label)	Identified By
Namespace	dwc
Table	Survey
Description	A name for a dcterms:Agent responsible for making a dwc:Identification.
Notes	When used in the context of a Survey, the subject consists of all of the dwc:Identifications related to the Event. Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Examples	`James L. Patton` `Theodore Pappenfuss \| Robert Macey`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identifiedBy

identifiedBy_fk
Title (Label)	Identified By (Foreign Key)
Namespace	dwc
Table	Survey
Description	An identifier for a dcterms:Agent responsible for making a dwc:Identification.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identifiedByID

identifiedByID
Title (Label)	Identified By ID
Namespace	dwc
Table	Survey
Description	An identifier for a dcterms:Agent responsible for making a dwc:Identification.
Notes	When used in the context of a Survey, the subject consists of all of the dwc:Identifications related to the Survey. Recommended best practice is to provide a single identifier that disambiguates the details of the identifying dcterms:Agent. If a list is used, the order of the identifiers on the list should not be assumed to convey any semantics. Recommended best practice is to separate the values in a list with space vertical bar space (` \| `). The value in this field MAY refer to a dcterms:Agent within or external to the dataset in which this record originated.
Examples	`https://orcid.org/0000-0002-1825-0097`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identifiedByID

identificationReferences
Title (Label)	Identification References
Namespace	dwc
Table	Survey
Description	A list (concatenated and separated) of dcterms:BibliographicResources used in a dwc:Identification.
Notes	When used in the context of a Survey, the subject consists of all of the dwc:Identifications related to the Survey. Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Examples	`Aves del Noroeste Patagonico. Christie et al. 2004.` `Stebbins, R. Field Guide to Western Reptiles and Amphibians. 3rd Edition. 2003. \| Irschick, D.J. and Shaffer, H.B. (1997). The polytypic species revisited: Morphological differentiation among tiger salamanders (Ambystoma tigrinum) (Amphibia: Caudata). Herpetologica, 53(1), 30-49.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identificationReferences

compilationTypes
Title (Label)	Compilation Types
Namespace	eco
Table	Survey
Description	A statement specifying whether data reported are derived from sampling events, ancillary data compiled from other sources, or a combination of both.
Notes	This term is only relevant if a dwc:Event is an inventory. Recommended best practice is to use a controlled vocabulary. Recommended best practice is to separate the values in a list with space vertical bar space (` \| `). This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`samplingEvents` `compilationOfExistingSourcesAndSamplingEvents` `compilationOfExistingSources` `compilationOfExistingSourcesAndSamplingEvents \| compilationOfExistingSources`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/compilationTypes

compilationSourceTypes
Title (Label)	Compilation Source Types
Namespace	eco
Table	Survey
Description	The types of data sources contributing to the compilation reported.
Notes	This term is only relevant if a dwc:Event is a compilation in which one or more types of data sources were used. Recommended best practice is to use a controlled vocabulary and separate multiple values in a list with space vertical bar space (` \| `). This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`museumSpecimens` `literature` `expertKnowledge \| localKnowledge`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/compilationSourceTypes

inventoryTypes
Title (Label)	Inventory Types
Namespace	eco
Table	Survey
Description	The types of search processes used to conduct an eco:Survey.
Notes	This term is only relevant if an eco:Survey represents an inventory. Recommended best practice is to use a controlled vocabulary. Recommended best practice is to separate multiple values in a list with space vertical bar space ( \| ). This term has an equivalent in the ecoiri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`restrictedSearch` `openSearch` `opportunisticSearch` `adventitious` `compilation` `openSearch \| opportunisticSearch`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/inventoryTypes

protocolNames
Title (Label)	Protocol Names
Namespace	eco
Table	Survey
Description	Categorical descriptive names for the methods used during an eco:Survey.
Notes	Recommended best practice is to use a controlled vocabulary and separate multiple values in a list with space vertical bar space (` \| `). This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`boxTrapping` `floraInventory` `boxTrapping \| funnelTrapping`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/protocolNames

protocolDescriptions
Title (Label)	Protocol Descriptions
Namespace	eco
Table	Survey
Description	A detailed description of the methods used during an eco:Survey.
Notes	This description should be associated with protocols provided in eco:protocolNames. The description may include deviations from a protocol referred to in eco:protocolReferences. Recommended good practice is to provide information about instruments used, calibration, etc. Recommended best practice is to separate multiple values in a list with space vertical bar space (` \| `).
Examples	`Three conventional harp traps (3.2m ht x 2.2m w) were established in flight path zones for a period of 4 hrs at dawn and dusk for a total of 10 trap nights. Traps were visited on an hourly basis during each deployment period and the trap catch recorded for species, size, weight, sex, age and maternal status.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/protocolDescriptions

protocolReferences
Title (Label)	Protocol References
Namespace	eco
Table	Survey
Description	The references to the methods used during an eco:Survey.
Notes	Recommended best practice is to separate multiple values in a list with space vertical bar space (` \| `).
Examples	`Penguins from space: faecal stains reveal the location of emperor penguin colonies, https://doi.org/10.1111/j.1466-8238.2009.00467.x`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/protocolReferences

isAbundanceReported
Title (Label)	Is Abundance Reported
Namespace	eco
Table	Survey
Description	The number of dwc:Organisms collected or observed was reported.
Notes	Typically the abundance values would be reported in the dwc:organismQuantity and dwc:organismQuantityType terms for the child dwc:Occurrence records for an eco:Survey. Recommended best practice is to follow the TDWG Boolean Controlled Vocabulary http://rs.tdwg.org/tag/doc/boolean/.
Examples	`true` `false`
Type	boolean
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/isAbundanceReported

isAbundanceCapReported
Title (Label)	Is Abundance Cap Reported
Namespace	eco
Table	Survey
Description	A maximum number of dwc:Organisms was reported, as specified or restricted by the protocol used.
Notes	Values of abundance cap should be captured under the term eco:abundanceCap. Recommended best practice is to follow the TDWG Boolean Controlled Vocabulary http://rs.tdwg.org/tag/doc/boolean/.
Examples	`true` `false`
Type	boolean
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/isAbundanceCapReported

isLeastSpecificTargetCategoryQuantityInclusive
Title (Label)	Is Least Specific Target Category Quantity Inclusive
Namespace	eco
Table	Survey
Description	The total detected quantity for a dwc:Taxon (including subcategories thereof) in an eco:Survey is given explicitly in a single record (dwc:organismQuantity value) for that dwc:Taxon.
Notes	This term is only relevant if dwc:organismQuantity is a number. For a detailed explanation, see http://rs.tdwg.org/dwc/doc/inclusive/. Recommended best practice is to follow the TDWG Boolean Controlled Vocabulary http://rs.tdwg.org/tag/doc/boolean/.
Examples	`true` `false`
Type	boolean
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/isLeastSpecificTargetCategoryQuantityInclusive

hasVouchers
Title (Label)	Has Vouchers
Namespace	eco
Table	Survey
Description	One or more specimen vouchers were collected during an eco:Survey.
Notes	Recommended best practice is to follow the TDWG Boolean Controlled Vocabulary http://rs.tdwg.org/tag/doc/boolean/.
Examples	`true` `false`
Type	boolean
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/hasVouchers

voucherInstitutions
Title (Label)	Voucher Institutions
Namespace	eco
Table	Survey
Description	A list (concatenated and separated) of the names or acronyms of the institutions where vouchers collected during an eco:Survey were deposited.
Notes	Recommended best practice is to separate multiple values in a list with space vertical bar space ( \| ).
Examples	`FMNH` `AMNH \| MVZ` `Nairobi National Museum`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/voucherInstitutions

hasMaterialSamples
Title (Label)	Has Material Samples
Namespace	eco
Table	Survey
Description	One or more dwc:MaterialEntities were collected during an eco:Survey.
Notes	Recommended best practice is to follow the TDWG Boolean Controlled Vocabulary http://rs.tdwg.org/tag/doc/boolean/.
Examples	`true` `false`
Type	boolean
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/hasMaterialSamples

materialSampleTypes
Title (Label)	Material Sample Types
Namespace	eco
Table	Survey
Description	A list (concatenated and separated) of material sample types collected during an eco:Survey.
Notes	Recommended best practice is to use a controlled vocabulary and separate multiple values in a list with space vertical bar space (` \| `). This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`wholeOrganism` `skeleton` `tissue \| blood \| fecal \| stomachContent`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/materialSampleTypes

samplingProtocol
Title (Label)	Sampling Protocol
Namespace	dwc
Table	Survey
Description	The names of, references to, or descriptions of the methods or protocols used during an eco:Survey.
Notes	Recommended best practice is describe an eco:Survey with no more than one sampling protocol. In the case of a summary eco:Survey with multiple protocols, in which a specific protocol can not be attributed to specific dwc:Occurrences, the recommended best practice is to separate the values in a list with space vertical bar space ( \| ). This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`UV light trap` `mist net` `bottom trawl` `ad hoc observation \| point count` `Penguins from space: faecal stains reveal the location of emperor penguin colonies, https://doi.org/10.1111/j.1466-8238.2009.00467.x` `Takats et al. 2001. Guidelines for Nocturnal Owl Monitoring in North America. Beaverhill Bird Observatory and Bird Studies Canada, Edmonton, Alberta. 32 pp., http://www.bsc-eoc.org/download/Owl.pdf`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/samplingProtocol

samplingProtocol_fk
Title (Label)	Sampling Protocol (Foreign Key)
Namespace	dwc
Table	Survey
Description	An identifier for a dwc:Protocol used as a sampling protocol.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/protocolID

sampleSizeValue
Title (Label)	Sample Size Value
Namespace	dwc
Table	Survey
Description	A numeric value for a measurement of the size (time duration, length, area, or volume) of a sample in a sampling dwc:Event.
Notes	A dwc:sampleSizeValue must have a corresponding dwc:sampleSizeUnit.
Examples	`5` (sampleSizeValue) with `metre` (sampleSizeUnit)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/sampleSizeValue

sampleSizeUnit
Title (Label)	Sample Size Unit
Namespace	dwc
Table	Survey
Description	The unit of measurement of the size (time duration, length, area, or volume) of a sample in a sampling dwc:Event.
Notes	A dwc:sampleSizeUnit must have a corresponding dwc:sampleSizeValue, e.g., `5` for dwc:sampleSizeValue with `m` for dwc:sampleSizeUnit. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`minute` `hour` `day` `metre` `square metre` `cubic metre`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/sampleSizeUnit

samplingPerformedBy
Title (Label)	Sampling Performed By
Namespace	eco
Table	Survey
Description	A person, group, or organization responsible for recording an eco:Survey.
Notes	An eco:Survey could be at any level of hierarchy. In the case of a higher level (parent) eco:Survey, include all the organizations or people involved in the child eco:Surveys that contributed to the parent eco:Survey. Recommended best practice is to separate multiple values in a list with space vertical bar space ( \| ). This term has an equivalent in the ecoiri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`North American Butterfly Association` `KK Wall` `JJ Green` `LL Pink and FF Grey \| Aspen Center for Environmental Studies`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/samplingPerformedBy

samplingPerformedBy_fk
Title (Label)	Sampling Performed By (Foreign Key)
Namespace	dwc
Table	Survey
Description	An identifier for a dcterms:Agent responsible for sampling.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

samplingPerformedByID
Title (Label)	Sampling Performed By ID
Namespace	dwc
Table	Survey
Description	An identifier for a dcterms:Agent responsible for sampling.
Notes	Recommended best practice is to provide a single identifier that disambiguates the details of the sampling dcterms:Agent. If a list is used, the order of the identifiers on the list should not be assumed to convey any semantics. Recommended best practice is to separate the values in a list with space vertical bar space (` \| `). The value in this field MAY refer to a dcterms:Agent within or external to the dataset in which this record originated.
Examples	`https://orcid.org/0000-0002-1825-0097`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

isSamplingEffortReported
Title (Label)	Is Sampling Effort Reported
Namespace	eco
Table	Survey
Description	The sampling effort associated with an eco:Survey was reported.
Notes	Typically values of effort would be captured under the terms eco:samplingEffortValue and eco:samplingEffortUnit. Recommended best practice is to follow the TDWG Boolean Controlled Vocabulary http://rs.tdwg.org/tag/doc/boolean/.
Examples	`true` `false`
Type	boolean
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/isSamplingEffortReported

samplingEffortProtocol
Title (Label)	Sampling Effort Protocol
Namespace	eco
Table	Survey
Description	A description of or reference to a Protocol used to determine a eco:samplingEffortValue.
Notes	This description should be associated with the values reported in eco:samplingEffortValue and eco:samplingEffortUnit. This is a specialization of eco:protocolDescriptions focused on effort, distinct from the survey method. The effort relates to the intensity of sampling and therefore can assist in interpreting estimates of completeness. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`40 box traps deployed at even spacings along 4 parallel 100m transects placed 50m apart and visited at 6 hourly intervals over a 48 hour period` `2 people occupying a bird hide for a period of 8 hours and undertaking a 30 minute count of species within the 150 degree field of view every 2 hours` `A single baited camera trap station with motion sensor trigger, deployed for a period of 10 days and configured for detecting large fauna moving through a known traffic way`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/samplingEffortProtocol

samplingEffortProtocol_fk
Title (Label)	Sampling Effort Protocol (Foreign Key)
Namespace	dwc
Table	Survey
Description	An identifier for a dwc:Protocol used to determine an eco:samplingEffortValue.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/protocolID

samplingEffortValue
Title (Label)	Sampling Effort Value
Namespace	eco
Table	Survey
Description	The numeric value for the sampling effort expended during an eco:Survey.
Notes	This term is meant to capture the total sampling effort value. To express details of how the effort was determined use eco:samplingEffortProtocol. For compilations it is recommend not to infer effort. An eco:samplingEffortValue must have a corresponding eco:samplingEffortUnit.
Examples	`1900` `40` `5.5`
Type	number
Constraints	{"minimum": 0}
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/samplingEffortValue

samplingEffortUnit
Title (Label)	Sampling Effort Unit
Namespace	eco
Table	Survey
Description	The units associated with an eco:samplingEffortValue.
Notes	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`trapHours` `personHours` `trapDays`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/samplingEffortUnit

informationWithheld
Title (Label)	Information Withheld
Namespace	dwc
Table	Survey
Description	Additional information that exists about a resource, but that is not shared publicly. Suggests that alternative data of higher quality may be available on request.
Examples	`location information not given for endangered species` `collector identities withheld \| ask about tissue samples`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/informationWithheld

dataGeneralizations
Title (Label)	Data Generalizations
Namespace	dwc
Table	Survey
Description	Actions taken to make the shared data less specific or complete than in its original form. Suggests that alternative data of higher quality may be available on request.
Examples	`Coordinates generalized from original GPS coordinates to the nearest half degree grid cell.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/dataGeneralizations

feedbackURL
Title (Label)	Feedback URL
Namespace	dwc
Table	Survey
Description	A uniform resource locator (URL) that points to a webpage on which a form may be submitted to gather feedback about the record.
Notes	Recommended best practice is to optionally include query strings that act to pre-populate web page form elements and communicate the context.
Examples	`https://example.com/new?title=New+issue&body=This+comment+is+about+CAN12345`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/feedbackURL

Survey Agent Role

Identifier: http://rs.tdwg.org/dwc-dp/1.0/survey-agent-role

Description: A role filled by a dcterms:Agent with respect to an eco:Survey.

dcterms:isVersionOf: http://example.com/term-pending//survey-agent-role

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
survey_fk	role for	survey	survey_pk	foreign key	Yes	Yes
agent_fk	role holder	agent	agent_pk	foreign key	Yes	Yes

survey_fk
Title (Label)	Survey (Foreign Key)
Namespace	eco
Table	Survey Agent Role
Description	An identifier for an eco:Survey.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/surveyID

agent_fk
Title (Label)	Agent (Foreign Key)
Namespace	dwc
Table	Survey Agent Role
Description	An identifier for a dcterms:Agent.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

agentRole
Title (Label)	Agent Role
Namespace	dwc
Table	Survey Agent Role
Description	A category that best matches the nature of a role of a dcterms:Agent.
Notes	Recommended best practice is to use a controlled vocabulary for the roles appropriate to the class of resource a dcterms:AgentRole is related to.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResource

agentRoleIRI
Title (Label)	Agent Role IRI
Namespace	dwciri
Table	Survey Agent Role
Description	An IRI of the controlled vocabulary value for a role of a dcterms:Agent.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResourceID

agentRoleSource
Title (Label)	Agent Role Source
Namespace	dc
Table	Survey Agent Role
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:agentRole is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

agentRoleOrder
Title (Label)	Agent Role Order
Namespace	dwc
Table	Survey Agent Role
Description	A numerical position of an AgentRole in a set of AgentRoles that have the same combination of agentRole, agentRoleIRI, agentRoleSource and related target identifier.
Notes	One could use dwc:agentRoleOrder to create an ordered list of collectors (dwc:agentRole = 'collector') for a dwc:MaterialEntity, for example. The first would have dwc:agentRoleOrder=1, the second would have dwc:agentRoleOrder=2.
Type	integer
Constraints	{"required": true, "minimum": 1}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentRoleOrder

agentRoleDate
Title (Label)	Agent Role Date
Namespace	dwc
Table	Survey Agent Role
Description	An interval during which a dcterms:AgentRole was in effect.
Notes	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionEffectiveDate

Survey Assertion

Identifier: http://rs.tdwg.org/dwc-dp/1.0/survey-assertion

Description: A dwc:Assertion made by a dcterms:Agent about an eco:Survey.

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/MeasurementOrFact

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
assertionID				weak primary key	No	No
survey_fk	about	survey	survey_pk	foreign key	Yes	Yes
assertionBy_fk	asserted by	agent	agent_pk	foreign key	Yes	No
assertionByID	asserted by	agent	agentID	weak foreign key	No	No
assertionProtocol_fk	followed	protocol	protocol_pk	foreign key	Yes	No

assertionID
Title (Label)	Assertion ID
Namespace	dwc
Table	Survey Assertion
Description	An identifier for a dwc:Assertion.
Notes	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": true}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionID

survey_fk
Title (Label)	Survey (Foreign Key)
Namespace	eco
Table	Survey Assertion
Description	An identifier for an eco:Survey.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/surveyID

verbatimAssertionType
Title (Label)	Verbatim Assertion Type
Namespace	dwc
Table	Survey Assertion
Description	A string representing the type of dwc:Assertion as it appeared in the original record.
Notes	This term is meant to allow the capture of an unaltered original name for a dwc:assertionType. This term is meant to be used in addition to dwc:assertionType, not instead of it.
Examples	`water_temp` `Fish biomass` `sampling net mesh size`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/verbatimAssertionType

assertionType
Title (Label)	Assertion Type
Namespace	dwc
Table	Survey Assertion
Description	A category that best matches the nature of a dwc:Assertion.
Notes	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`tail length` `temperature` `trap line length` `survey area` `trap type`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionType

assertionTypeIRI
Title (Label)	Assertion Type IRI
Namespace	dwciri
Table	Survey Assertion
Description	An IRI of a controlled vocabulary value for a type of dwc:Assertion.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/iri/measurementType

assertionTypeSource
Title (Label)	Assertion Type Source
Namespace	dc
Table	Survey Assertion
Description	A reference to the controlled vocabulary in which the definition of a value in dwc:assertionType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionMadeDate
Title (Label)	Assertion Made Date
Namespace	dwc
Table	Survey Assertion
Description	A date on which a dwc:Assertion was created.
Notes	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionMadeDate

assertionEffectiveDate
Title (Label)	Assertion Effective Date
Namespace	dwc
Table	Survey Assertion
Description	A date-time or time interval during which an asserted state or measurement was deemed to be in effect.
Notes	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionEffectiveDate

assertionValue
Title (Label)	Assertion Value
Namespace	dwc
Table	Survey Assertion
Description	An asserted value.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionValue

assertionValueIRI
Title (Label)	Assertion Value IRI
Namespace	dwciri
Table	Survey Assertion
Description	An IRI of the controlled vocabulary value for a value of a dwc:Assertion.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/iri/measurementValue

assertionValueSource
Title (Label)	Assertion Value Source
Namespace	dc
Table	Survey Assertion
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:assertionValue is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionUnit
Title (Label)	Assertion Unit
Namespace	dwc
Table	Survey Assertion
Description	Unit associated with the value in dwc:assertionValue.
Notes	Recommended best practice is to use a controlled vocabulary such as the Ontology of Units of Measure http://www.wurvoc.org/vocabularies/om-1.8/ of SI units, derived units, or other non-SI units accepted for use within the SI. For units that are composed of multiple parts, use the patterns as given in "A Primer for Communicating Mathematics via Plain Text" (https://cse.sc.edu/~fenner/latex-ASCII.pdf) by Stephen Fenner (e.g., `g/cm^3` for grams per cubic centimeter). For other units, provide the value as a recognizable standard (e.g., '%') or written out in full and in the plural (e.g., `individuals`). It is fine to provide non-SI units in the original language of the dataset.
Examples	`m` `s` `g` `ml`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionUnit

assertionUnitIRI
Title (Label)	Assertion Unit IRI
Namespace	dwciri
Table	Survey Assertion
Description	An IRI of a controlled vocabulary value for the unit of a dwc:assertionValue.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/iri/assertionUnit

assertionUnitSource
Title (Label)	Assertion Unit Source
Namespace	dc
Table	Survey Assertion
Description	A reference to a controlled vocabulary in which the definition of the value in dwc:assertionUnit is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionError
Title (Label)	Assertion Error
Namespace	dwc
Table	Survey Assertion
Description	A description of the potential error associated with a dwc:assertionValue.
Examples	`0.01` `normal distribution with variation of 2 m`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionError

assertionBy
Title (Label)	Assertion By
Namespace	dwc
Table	Survey Assertion
Description	A list (concatenated and separated) of names of dcterms:Agents responsible for making a dwc:Assertion.
Notes	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionBy

assertionBy_fk
Title (Label)	Assertion By (Foreign Key)
Namespace	dwc
Table	Survey Assertion
Description	An identifier for a dcterms:Agent responsible for making a dwc:Assertion.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

assertionByID
Title (Label)	Assertion By ID
Namespace	dwc
Table	Survey Assertion
Description	An identifier for a dcterms:Agent responsible for making a dwc:Assertion.
Notes	The value in this field MAY refer to a dcterms:Agent within or external to the dataset in which this record originated.
Examples	`https://orcid.org/0000-0002-1825-0097`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

assertionProtocols
Title (Label)	Assertion Protocols
Namespace	dwc
Table	Survey Assertion
Description	Names of, references to, or descriptions of dwc:Protocols used in making a dwc:Assertion.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionProtocols

assertionProtocol_fk
Title (Label)	Assertion Protocol (Foreign Key)
Namespace	dwc
Table	Survey Assertion
Description	An identifier for a dwc:Protocol used to make a dwc:Assertion.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/protocolID

assertionReferences
Title (Label)	Assertion References
Namespace	dwc
Table	Survey Assertion
Description	A list (concatenated and separated) of dcterms:BibliographicResources associated with a dwc:Assertion.
Notes	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionReferences

assertionRemarks
Title (Label)	Assertion Remarks
Namespace	dwc
Table	Survey Assertion
Description	Comments or notes about a dwc:Assertion.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/assertionRemarks

Survey Identifier

Identifier: http://rs.tdwg.org/dwc-dp/1.0/survey-identifier

Description: An adms:Identifier for an eco:Survey.

Notes: An important point to note is that properties of the adms:Identifier class are properties of the Identifier, not the resource that it identifies or the agency that issued it.

dcterms:isVersionOf: http://www.w3.org/ns/adms#Identifier

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
survey_fk	for	survey	survey_pk	foreign key	Yes	Yes

survey_fk
Title (Label)	Survey (Foreign Key)
Namespace	eco
Table	Survey Identifier
Description	An identifier for an eco:Survey.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/surveyID

identifier
Title (Label)	Identifier
Namespace	skos
Table	Survey Identifier
Description	An unambiguous reference to a resource within a given context.
Notes	Recommended best practice is to identify a resource by means of a string conforming to a formal identification system.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://www.w3.org/2004/02/skos/core#notation

identifierType
Title (Label)	Identifier Type
Namespace	dc
Table	Survey Identifier
Description	A category or system that best matches the nature of an identifier (skos:notation).
Notes	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/type

identifierTypeIRI
Title (Label)	Identifier Type IRI
Namespace	dcterms
Table	Survey Identifier
Description	An IRI of a controlled vocabulary value for a type of identifier.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/type

identifierTypeSource
Title (Label)	Identifier Type Source
Namespace	dc
Table	Survey Identifier
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:identifierType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

identifierLanguage
Title (Label)	Identifier Language
Namespace	dc
Table	Survey Identifier
Description	A language in which an identifier is presented.
Notes	Recommended best practice is to use an ISO639-2 three-letter language code.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/language

Survey Protocol

Identifier: http://rs.tdwg.org/dwc-dp/1.0/survey-protocol

Description: A dwc:Protocol used for an eco:Survey.

dcterms:isVersionOf: http://example.com/term-pending//survey-protocol

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
protocol_fk	followed	protocol	protocol_pk	foreign key	Yes	Yes
survey_fk	used during	survey	survey_pk	foreign key	Yes	Yes

protocol_fk
Title (Label)	Protocol (Foreign Key)
Namespace	dwc
Table	Survey Protocol
Description	An identifier for a dwc:Protocol.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/protocolID

survey_fk
Title (Label)	Survey (Foreign Key)
Namespace	eco
Table	Survey Protocol
Description	An identifier for an eco:Survey.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/surveyID

Survey Reference

Identifier: http://rs.tdwg.org/dwc-dp/1.0/survey-reference

Description: A dcterms:BibliographicResource related to an eco:Survey.

dcterms:isVersionOf: http://example.com/term-pending//survey-reference

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
reference_fk	mentioned in	bibliographic-resource	reference_pk	foreign key	Yes	No
survey_fk	mentioned	survey	survey_pk	foreign key	Yes	Yes

reference_fk
Title (Label)	Reference (Foreign Key)
Namespace	dwc
Table	Survey Reference
Description	An identifier for a dcterms:BibliographicResource.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/referenceID

survey_fk
Title (Label)	Survey (Foreign Key)
Namespace	eco
Table	Survey Reference
Description	An identifier for an eco:Survey.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/surveyID

relationshipType
Title (Label)	Relationship Type
Namespace	dwc
Table	Survey Reference
Description	A relationship of a subject resource to a dcterms:BibliographicResource.
Notes	Recommended best practice is to use a controlled vocabulary.
Examples	`cited in` `referenced`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResource

Survey Survey Target

Identifier: http://rs.tdwg.org/dwc-dp/1.0/survey-survey-target

Description: An eco:SurveyTarget used for an eco:Survey.

dcterms:isVersionOf: http://example.com/term-pending//survey-survey-target

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
survey_fk	target for	survey	survey_pk	foreign key	Yes	Yes
surveyTarget_fk	has target	survey-target	surveyTarget_pk	foreign key	Yes	Yes

survey_fk
Title (Label)	Survey (Foreign Key)
Namespace	eco
Table	Survey Survey Target
Description	An identifier for an eco:Survey.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/surveyID

surveyTarget_fk
Title (Label)	Survey Target (Foreign Key)
Namespace	eco
Table	Survey Survey Target
Description	An identifier for an eco:SurveyTarget.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/surveyTargetID

Survey Target

Identifier: http://rs.tdwg.org/dwc-dp/1.0/survey-target

Description: One or more scopes that describe a target for dwc:Occurrences in an eco:Survey.

Examples:

`all bird species`

`all bird species except Larus gulls, fulmars and kittiwakes`

`reproductive female Ctenomys sociabilis (only)`

`Oncorhynchus mykiss and Oncorhynchus clarkii (only)`, `all total lengths except < 12 inches`

dcterms:isVersionOf: http://rs.tdwg.org/eco/terms/SurveyTarget

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
surveyTarget_pk				primary key	Yes	Yes
surveyTargetID				weak primary key	No	No

surveyTarget_pk
Title (Label)	Survey Target (Primary Key)
Namespace	eco
Table	Survey Target
Description	A unique identifier for an eco:SurveyTarget.
Notes	The value in this field MAY be changed in aggregation to guarantee uniqueness.
Type	string
Constraints	{"required": true, "unique": true}
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/surveyTargetID

surveyTargetID
Title (Label)	Survey Target ID
Namespace	eco
Table	Survey Target
Description	An identifier for an eco:SurveyTarget.
Notes	The value in this field MUST be preserved in aggregation. Recommended best practice is to use a globally unique identifier.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/surveyTargetID

surveyTargetDescription
Title (Label)	Survey Target Description
Namespace	eco
Table	Survey Target
Description	A verbatim description of an eco:SurveyTarget.
Examples	`all passerine birds` `all flowering Rosaceae`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/surveyTargetDescription

isSurveyTargetFullyReported
Title (Label)	Is Survey Target Fully Reported
Namespace	eco
Table	Survey Target
Description	Whether an eco:SurveyTarget can be used to infer absence of detection because all counts of detected dwc:Occurrences matching an eco:SurveyTarget were fully reported.
Notes	Recommended best practice is to follow the TDWG Boolean Controlled Vocabulary http://rs.tdwg.org/tag/doc/boolean/. If true (the survey target is fully reported - nothing was left unreported), then this enables inference of absence of detection for everything in that eco:SurveyTarget that is included but that does not appear in the counts (absent counts signify absence of detection).
Examples	`true` `false`
Type	boolean
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/isSurveyTargetFullyReported

abundanceCap
Title (Label)	Abundance Cap
Namespace	eco
Table	Survey Target
Description	The reported maximum number of dwc:Occurrences matching an eco:SurveyTarget.
Examples	`300` `700`
Type	integer
Constraints	{"minimum": 0}
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/abundanceCap

surveyTargetRemarks
Title (Label)	Survey Target Remarks
Namespace	eco
Table	Survey Target
Description	Comments or notes about an eco:SurveyTarget.
Examples	`Survey target scopes reflect post-facto filtering, not original survey design.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/surveyTargetRemarks

Survey Target Descriptor

Identifier: http://rs.tdwg.org/dwc-dp/1.0/survey-target-descriptor

Description: A combination of a survey target value and a survey target type for a given eco:SurveyTarget.

Examples:

`taxon: Aves`

`pathway: transportContaminant`

`minimumTotalLength: 20 cm`

dcterms:isVersionOf: http://rs.tdwg.org/eco/terms/SurveyTargetDescriptor

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
surveyTarget_fk	for target	survey-target	surveyTarget_pk	foreign key	Yes	Yes

surveyTarget_fk
Title (Label)	Survey Target (Foreign Key)
Namespace	eco
Table	Survey Target Descriptor
Description	An identifier for an eco:SurveyTarget.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/surveyTargetID

surveyTargetType
Title (Label)	Survey Target Type
Namespace	eco
Table	Survey Target Descriptor
Description	A category that best matches the nature of a scope in an eco:SurveyTarget.
Notes	Recommended best practice is to use a controlled vocabulary.
Examples	`taxon` `habitat` `establishmentMeans` `growthForm` `sex` `lifeStage` `minimum length`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/surveyTargetType

surveyTargetTypeIRI
Title (Label)	Survey Target Type IRI
Namespace	dcterms
Table	Survey Target Descriptor
Description	An IRI of a controlled vocabulary value for a type of target.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/type

surveyTargetTypeSource
Title (Label)	Survey Target Type Source
Namespace	dc
Table	Survey Target Descriptor
Description	A reference to a controlled vocabulary in which the definition of a value in eco:SurveyTargetType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

surveyTargetValue
Title (Label)	Survey Target Value
Namespace	eco
Table	Survey Target Descriptor
Description	A value to include or exclude in a scope categorized by eco:surveyTargetType.
Notes	Recommended best practice is to use a controlled vocabulary.
Examples	`Aves` `oak savannah` `native` `tree` `female` `adult` `height` `weight`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/surveyTargetValue

surveyTargetValueIRI
Title (Label)	Survey Target Value IRI
Namespace	ecoiri
Table	Survey Target Descriptor
Description	A value to include or exclude in a scope categorized by eco:surveyTargetType.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/iri/surveyTargetValue

surveyTargetValueSource
Title (Label)	Survey Target Value Source
Namespace	dc
Table	Survey Target Descriptor
Description	A reference to a controlled vocabulary in which the definition of a value in eco:SurveyTargetValue is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

surveyTargetUnit
Title (Label)	Survey Target Unit
Namespace	eco
Table	Survey Target Descriptor
Description	Unit associated with a value in eco:surveyTargetValue.
Notes	Recommended best practice is to use a controlled vocabulary.
Examples	`m` `g` `years`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/surveyTargetUnit

surveyTargetUnitIRI
Title (Label)	Survey Target Unit IRI
Namespace	ecoiri
Table	Survey Target Descriptor
Description	Unit associated with a value in eco:surveyTargetValue.
Notes	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/iri/surveyTargetUnit

surveyTargetUnitSource
Title (Label)	Survey Target Unit Source
Namespace	dc
Table	Survey Target Descriptor
Description	A reference to a controlled vocabulary in which the definition of a value in eco:SurveyTargetUnit is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

includeOrExclude
Title (Label)	Include Or Exclude
Namespace	eco
Table	Survey Target Descriptor
Description	Whether to include or exclude eco:surveyTargetValue in a scope categorized by eco:surveyTargetType.
Notes	Combinations of eco:SurveyTarget records of inclusions and exclusions can define complex scopes such as all flying adult Aves except Passeriformes. Recommended best practice is to use a controlled vocabulary consisting of 'include' and 'exclude' only.
Examples	`include` `exclude`
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/includeOrExclude

Usage Policy

Identifier: http://rs.tdwg.org/dwc-dp/1.0/usage-policy

Description: Information about rights, usage, and attribution statements applicable to an entity.

Notes: This is a convenience class to group related properties.

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/UsagePolicy

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Relationship Type	Enforced	Required
usagePolicy_pk				primary key	Yes	Yes
usagePolicyID				weak primary key	No	No
rightsHolder_fk	rights held by	agent	agent_pk	foreign key	Yes	No
rightsHolderID	rights held by	agent	agentID	weak foreign key	No	No
owner_fk	owned by	agent	agent_pk	foreign key	Yes	No
ownerID	owned by	agent	agentID	weak foreign key	No	No

usagePolicy_pk
Title (Label)	Usage Policy (Primary Key)
Namespace	dcterms
Table	Usage Policy
Description	A unique identifier for a dwc:UsagePolicy.
Notes	The value in this field MAY be changed in aggregation to guarantee uniqueness.
Type	string
Constraints	{"required": true, "unique": true}
dcterms:isVersionOf	http://purl.org/dc/terms/identifier

usagePolicyID
Title (Label)	Usage Policy ID
Namespace	dcterms
Table	Usage Policy
Description	An identifier for a dwc:UsagePolicy.
Notes	The value in this field MUST be preserved in aggregation. Recommended best practice is to use a globally unique identifier.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/usagePolicyID

rights
Title (Label)	Rights
Namespace	dc
Table	Usage Policy
Description	Information about rights held in and over the resource. A full-text, readable copyright statement, as required by the national legislation of the copyright holder. On collections, this applies to all contained objects, unless the object itself has a different statement. Examples: “Copyright XY 2008, all rights reserved”, “© 2008 XY Museum” , `Public Domain.`; `Copyright unknown.` Do not place just the name of the copyright holder(s) here! That belongs in a list in the xmpRights:Owner field, which should be supplied if dc:rights is not 'Public Domain', which is appropriate only if the resource is known to be not under copyright. See also the entry for dcterms:rights in this document and see the DCMI FAQ on DC and DCTERMS Namespaces for discussion of the rationale for terms in two namespaces. Normal practice is to use the same Label if both are provided. Labels have no effect on information discovery and are only suggestions.
Examples	`Copyright 2014 Ron Thomas` or a URI like `http://creativecommons.org/licenses/by/3.0/legalcode`
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/rights

rightsIRI
Title (Label)	Rights IRI
Namespace	dcterms
Table	Usage Policy
Description	A URI pointing to structured information about rights held in and over the resource. Examples include http://creativecommons.org/licenses/by/3.0/legalcode and http://creativecommons.org/publicdomain/zero/1.0/. At least one of dcterms:rights and dc:rights must be supplied but, when feasible, supplying both may make the metadata more widely useful. They must specify the same rights. In case of ambiguity, dcterms:rights prevails.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/rights

rightsHolder
Title (Label)	Rights Holder
Namespace	dcterms
Table	Usage Policy
Description	A name of a dcterms:Agent that owns or manages rights over a resource.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/rightsHolder

rightsHolder_fk
Title (Label)	Rights Holder (Foreign Key)
Namespace	dwc
Table	Usage Policy
Description	An identifier for a dcterms:Agent that owns or manages rights over a resource.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

rightsHolderID
Title (Label)	Rights Holder ID
Namespace	dwc
Table	Usage Policy
Description	An identifier for a dcterms:Agent that owns or manages rights over a resource.
Notes	The value in this field MAY refer to a dcterms:Agent within or external to the dataset in which this record originated.
Examples	`https://orcid.org/0000-0002-1825-0097`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

owner
Title (Label)	Owner
Namespace	xmprights
Table	Usage Policy
Description	A list of legal owners of the resource.
Notes	`unknown`
Examples	`The names of the owners `Ron Thomas, Roz Thomas` or a URI that identifies the owner`
Type	string
dcterms:isVersionOf	http://ns.adobe.com/xap/1.0/rights/Owner

owner_fk
Title (Label)	Owner (Foreign Key)
Namespace	dwc
Table	Usage Policy
Description	An identifier for a dcterms:Agent that is the owner of the resource.
Notes	The value in this field MAY be changed in aggregation to preserve the relationship to the related primary key.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

ownerID
Title (Label)	Owner ID
Namespace	dwc
Table	Usage Policy
Description	An identifier for a dcterms:Agent that owns the copyright for a resource.
Notes	The value in this field MAY refer to a dcterms:Agent within or external to the dataset in which this record originated.
Examples	`https://orcid.org/0000-0002-1825-0097`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/agentID

usageTerms
Title (Label)	Usage Terms
Namespace	xmprights
Table	Usage Policy
Description	A collection of text instructions on how a resource can be legally used, given in a variety of languages.
Type	string
dcterms:isVersionOf	http://ns.adobe.com/xap/1.0/rights/UsageTerms

webStatement
Title (Label)	Web Statement
Namespace	xmprights
Table	Usage Policy
Description	A URL defining or further elaborating on a license statement (e.g., a web page explaining the precise terms of use).
Examples	`http://creativecommons.org/licenses/by-nc-sa/3.0/us/`
Type	string
dcterms:isVersionOf	http://ns.adobe.com/xap/1.0/rights/WebStatement

accessRights
Title (Label)	Access Rights
Namespace	dcterms
Table	Usage Policy
Description	Information about who can access the resource or an indication of its security status.
Notes	Access Rights may include information regarding access or restrictions based on privacy, security, or other policies.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/accessRights

license
Title (Label)	License
Namespace	dcterms
Table	Usage Policy
Description	A legal document giving official permission to do something with the resource.
Notes	Recommended practice is to identify the license document with a URI. If this is not possible or feasible, a literal value that identifies the license may be provided.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/license

licenseLogoURL
Title (Label)	License Logo URL
Namespace	ac
Table	Usage Policy
Description	A URL providing access to a logo that symbolizes a dcterms:license.
Notes	The originating metadata provider is strongly urged to choose a suitable logo as a graphical representation of the license. Failure to do so may leave downstream aggregators in a difficult position to supply a logo that adequately represents the professional, legal, or social aims of the licensors (license givers). Example: http://i.creativecommons.org/l/by-nc-sa/3.0/us/88x31.png provides access to a logo image.
Examples	`http://i.creativecommons.org/l/by-nc-sa/3.0/us/88x31.png`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/licenseLogoURL

licensingException
Title (Label)	Licensing Exception
Namespace	ac
Table	Usage Policy
Description	The licensing statement for this variant of the ac:Media resource if different from that given in the dcterms:license property of the resource.
Notes	Required only if this version has different licensing than that of a corresponding ac:Media resource. For example, the highest resolution version may be more restricted than lower resolution versions.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/licensingException

credit
Title (Label)	Credit
Namespace	photoshop
Table	Usage Policy
Description	The credit to person(s) and/or organisation(s) required by the supplier of the item to be used when published. This is a free-text field.
Notes	For example, `Please cite this as…`.
Type	string
dcterms:isVersionOf	http://ns.adobe.com/photoshop/1.0/Credit

attributionLogoURL
Title (Label)	Attribution Logo URL
Namespace	ac
Table	Usage Policy
Description	The URL of the icon or logo image to appear in source attribution.
Examples	`http://www.morphbank.net/images/userLogos/11a.jpg`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/attributionLogoURL

attributionLinkURL
Title (Label)	Attribution Link URL
Namespace	ac
Table	Usage Policy
Description	The URL where information about ownership, attribution, etc. of the resource may be found.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/attributionLinkURL

Visual Summary

The diagram below shows an overview of the DwC-DP tables (boxes) and the relationships between them (arrows). To avoid clutter, the diagram simplifies the representation of the model in a variety of ways. First, myriad join tables (tables that connect two classes in many-to-many relationships, e.g., EventMedia, MaterialMedia, OccurrenceMedia, etc.) are represented with stacks of boxes by category (e.g., under the box labeled ...Media) rather than with separate boxes for each join table. The relationships to the tables connected through the join tables are represented by single arrows (e.g., to the Media table) and the label "join to" rather than the myriad arrows that would otherwise be required. Second, the directionality of the relationships are shown with arrows, but the fields that connect the tables (keys), the cardinality of those connections (uniqueness and whether they are required), and the nature of the relationships (predicates) are not shown. The keys, cardinality and predicates are all shown in the sections for each table titled "Relationships to Other Tables".

Overview of how Darwin Core Data Package tables relate to each other.

Figure 1. Overview of the Darwin Core Data Package (DwC-DP), showing tables (classes) and their relationships to each other. To further explore the relationships between tables, see the Darwin Core Data Package Designer.

Darwin Core Data Packages (DwC-DP) vs Darwin Core Archives (DwC-A)

Both Darwin Core Data Packages (DwC-DP) and Darwin Core Archives (DwC-A) are implementation schemas that use the Darwin Core Standard to share biodiversity-related data.

DwC-DP fully supports non-checklist datasets traditionally published as DwC-As (observations and physical specimens, with extensions), but it goes far beyond, allowing richer data to be shared from these traditional datasets than was hitherto supported. Also, it empowers those who desire to share entirely new types of data (biotic surveys with inferred absence and abundance, hierarchical material entities, organism interactions, and nucleotide analyses, among others) via Darwin Core.

Table 1. Main differences between DwC-A and DwC-DP.

	DwC-A	DwC-DP
Guide	Darwin Core Text Guide	Darwin Core Data Package Guide
Data structure	Limited: “Star schema”, with a “Core” file and optional “Extensions”. Relationships only from Extensions to the Core. Flattened, “spreadsheet-like” Defined in: `meta.xml`	Relational: No “Core”, no “Extensions”, just tables. Multiple relationships between tables (Figure 1), details in the table definitions. Relational, “database-like” Defined in: `datapackage.json`
Table types	Cores: Event, Occurrence, Taxon Extensions: Chronometric Age, DNA, Identification, Identifier, Literature Reference, Media, MeasurementsOrFact, Survey	Agent, Assertion, Bibliographic Resource, Chronometric Age, Event, Geological Context, Identification, Identifier, Material, Media, Molecular Protocol, Nucleotide Analysis, Nucleotide Sequence, Occurrence, Organism, Organism Interaction, Protocol, Provenance, Survey, Survey Target, Usage Policy
Semantics	No explicit semantics	Darwin Core Conceptual Model
Dataset metadata	`eml.xml`	`eml.xml`
Data format	CSV, TSV	CSV, TSV

Schematic comparison of Darwin Core Archives and Darwin Core Data Packages.

Figure 2. Schematic representations of DwC-A and DwC-DP. In DwC-A, “Extension” files can only be connected to the “Core” file via the unique identifier for a row in the “Core” file. In DwC-DP, files can be connected in all of the ways shown in Figure 1.

Version: http://rs.tdwg.org/dwc-dp/1.0